Appendix

85

86

TUBE-TYPE TUBES, FLAPS AND VALVES

A tire cannot perform properly unless it is mounted properly on the correct size wheel. The following are general instructions for demounting and mounting MICHELIN

® tube-type tires. For detailed instructions on mounting and demounting truck tires on particular types of wheels, refer to the instructions of the wheel manufacturer or the RMA

(Rubber Manufacturers Association) wall charts. l7.50R15

8.25R15

10.00R15

9.00R16

7.50R17

335/80R20

275/80R20

365/80R20

15.5/80R20

14.00R20

14.5R20

395/85R20

365/85R20

16.00R20

10.00R20

11.00R20

12.00R20

12.00R24

SIZE

Do not reinflate any tires that have been run underinflated or flat without careful inspection for damage. If run-flat damage is detected, scrap the tire. A tire is considered run-flat if it is found to be less than 80% of normal recommended operating pressure. This can result in serious injury or death.

The tire may be damaged on the inside and can explode during inflation. The wheel parts may be worn, damaged, or dislodged and can explosively separate.

20S

20S

20V

20N

20P

20Q

24Q

TUBE

TUBES AND FLAPS FOR COMMERCIAL TRUCK TIRES

TUBE MSPN FLAP

15/16J

15/16J

15P

73993

73993

04560

15x6.00

15x6.00

15x7.50

16N

17K

20P

20P

20Q

20S

20S

20S

17786

26362

06934

06934

39144

32420

32420

32420

16x6.00D

17X6.00D

20x10.00

20x10.00

20x10.00

20x10.00

20x10.00

20x10.00

32420

32420

32961

17078

06934

39144

11708

20x10.00

20x10.00

20x10.00

20x7.50

20x8.50

20x8.50

24/25x8.50

FLAP MSPN

62152

62152

58753

94605

45608

47501

47501

47501

47501

47501

47501

47501

47501

47501

44274

49781

49781

48842

Product

T igre grease

MOUNTING LUBRICANT

Size

4 Kg

Product code

25817

SELECTION OF PROPER COMPONENTS

AND MATERIALS

a. All tires must be mounted with the proper

MICHELIN ® tube and flap (if required) and wheel

as indicated in the specification tables on

Page 84.

Rim

Nylon Plate

Flap

Valve

b. Make certain that wheel components are properly

matched and of the correct dimensions for the tire.

c. Always fit a new MICHELIN

® tube in a new

mounting. Since a tube will exhibit growth in size through normal use, an old tube used in a new mounting increases the possibility of tube creasing and chafing, possibly resulting in failure.

Tube

f. Always use a safety device such as an inflation cage or other restraining device that will constrain all wheel components during an explosive separation of a multipiece wheel, or during the sudden release of the contained air of a single piece wheel that is in compliance with OSHA (Occupational Safety and

Health Administration) standards. Do not bolt restraining device to the floor. Never stand over a tire or in front of a tire when inflating. Always use a clip-on valve chuck with an in-line valve with a pressure gauge or a presettable regulator. Additionally, ensure there is a sufficient length of hose between the clip-on chuck and the in line valve (if one is used) to allow the service technician to stand outside the trajectory path when inflating. Trajectory zone means any potential path or route that a wheel component may travel during an explosive separation, or the sudden release of the pressurized air, or an area at which an blast from a single piece wheel may be released.

The trajectory may deviate from paths that are perpendicular to the assembled position of the wheel at the time of separation or explosion.

Pinched tube

d. Always install a new flap in a new mounting. A flap, through extended use, becomes hard and brittle.

After a limited time, it will develop a set to match the tire and wheel in which it is fitted. Therefore, it will not exactly match a new tire and wheel combination.

e. Always install new valve cores and metal valve caps

containing plastic or rubber seals. For tires requiring

O-rings, be sure to properly install a new silicone

O-ring at every tire change.

NEVER WELD OR APPLY HEAT TO A WHEEL ON

WHICH A TIRE IS MOUNTED.

87

88

GENERAL INFORMATION

UNITS OF MEASUREMENT

Quantity S.I. Units Other Units

Length m

(meter)

1 inch (") = 0.0254 m or 25.4 mm

1 mile = 1609 m (1.609 km)

1 kilometer = 0.621 mile

Mass kg

(Kilogram)

1 pound (lb) = 0.4536 kg

1 kilogram (kg) = 2.205 lbs.

Pressure kPa

(Pascal)

1 bar* = 100 kPa

1 psi = 6.895 kPa

1 pound per square inch

1 kg/cm2 - 98.066 kPa

Speed m/s

(meter per second)

1 kilometer per hour (kph)* =

0.27778 m/s

1 mile per hour (mph) =

0.4470 m/s (or 1.60935 kph)

* Non S.I. unit to be retained for use in specialized fields.

PRESSURE UNIT CONVERSION TABLE

3.5

4.0

4.5

5.0

5.5

6.0

bar

1.0

1.5

2.0

2.5

3.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

350

400

450

500

550

600

kPa

100

150

200

250

300

650

700

750

800

850

900

950

1000

1050

73

80

87

51

58

65

lb/in 2 *

15

22

29

36

44

94

102

109

116

123

131

138

145

152

3.6

4.1

4.6

5.1

5.6

6.1

kg/cm 2 *

1.0

1.5

2.0

2.5

3.1

6.6

7.1

7.7

8.2

8.7

9.2

9.7

10.2

10.7

SPEED SYMBOL

The ISO* SPEED SYMBOL indicates the speed at which the tire can carry a load corresponding to its Load Index under service conditions specified by the tire manufacturer.**

Speed

Speed Symbol

C

D

E

F

G

A7

A8

B

A1

A2

A3

A4

A5

A6

J

K

L

M

N

60

65

70

80

90

35

40

50

(kph)

5

10

15

20

25

30

100

110

120

130

140

22.5

25

30

35

40

43

50

56

mph

2.5

5

10

12.5

15

20

62

68

75

81

87

* International Standardization Organization

** Exceeding the legal speed limit is neither recommended nor endorsed.

LOAD RANGE/PLY RATING

B – 4

C – 6

D – 8

E – 10

F – 12

G – 14

H – 16

J – 18

L – 20

M – 22

LOAD INDEX

The ISO LOAD INDEX is a numerical code associated with the maximum load a tire can carry at the speed indicated by its SPEED* SYMBOL under service conditions specified by the tire manufacturer. (1 kg = 2.205 lbs.)

1,650

1,700

1,750

1,800

1,850

1,900

1,950

2,000

2,060

1,400

1,450

1,500

1,550

1,600

1,215

1,250

1,285

1,320

1,360

1,000

1,030

1,060

1,090

1,120

1,150

1,180

875

900

925

950

975

kg

800

825

850

9,650

9,920

10,200

10,500

10,700

11,000

11,400

11,700

12,000

8,270

8,540

8,820

9,090

9,370

7,160

7,390

7,610

7,830

8,050

5,840

6,005

6,175

6,395

6,610

6,780

6,940

lbs

4,675

4,805

4,940

5,070

5,205

5,355

5,510

5,675

4,375

4,500

4,625

4,750

4,875

5,000

5,150

5,300

5,450

3,750

3,875

4,000

4,125

4,250

3,250

3,350

3,450

3,550

3,650

2,650

2,725

2,800

2,900

3,000

3,075

3,150

kg

2,120

2,180

2,240

2,300

2,360

2,430

2,500

2,575

3,640

3,750

3,860

3,970

4,080

4,190

4,300

4,410

4,540

3,085

3,195

3,305

3,415

3,525

2,680

2,755

2,835

2,910

3,000

2,205

2,270

2,335

2,405

2470

2,535

2,600

lbs

1,765

1,820

1,875

1,930

1,985

2,040

2,095

2,150

125

126

127

128

129

130

131

132

133

120

121

122

123

124

115

116

117

118

119

108

109

110

111

112

113

114

Load Index

100

101

102

103

104

105

106

107

159

160

161

162

163

164

165

166

167

154

155

156

157

158

149

150

151

152

153

142

143

144

145

146

147

148

Load Index

134

135

136

137

138

139

140

141

25,360

26,020

26,800

27,565

28,355

29,110

30,000

30,870

31,980

19,295

19,845

20,400

21,000

21,500

22,050

22,720

23,400

24,040

24,700

15,700

16,100

16,500

17,100

17,600

18,195

18,745

lbs

12,300

12,800

13,200

13,600

13,900

14,300

14,800

15,200

11,500

11,800

12,150

12,500

12,850

13,200

13,600

14,000

14,500

8,750

9,000

9,250

9,500

9,750

10,000

10,300

10,600

10,900

11,200

7,100

7,300

7,500

7,750

8,000

8,250

8,500

kg

5,600

5,800

6,000

6,150

6,300

6,500

6,700

6,900

193

194

195

196

197

198

199

200

201

188

189

190

191

192

183

184

185

186

187

176

177

178

179

180

181

182

Load Index

168

169

170

171

172

173

174

175

89

90

STATIC AND LOW SPEED LOAD AND PRESSURE COEFFICIENTS

STATIC AND LOW SPEED LOAD AND PRESSURE COEFFICIENTS

Do not exceed loads or pressure limits of the wheel without permission of the component manufacturer. Exceeding the legal speed limit is neither recommended nor endorsed.

TRA (THE TIRE AND RIM ASSOCIATION, INC.) STANDARDS

(These Tables apply to tires only. Consult wheel manufacturer for wheel load and inflation capacities.)

Load limits at various speeds for radial ply truck-bus tires used on improved surfaces.

(1)

A. METRIC AND WIDE BASE TIRES

The service load and minimum (cold) inflation must comply with the following limitations unless a speed restriction is indicated on the tire.*

B. CONVENTIONAL TIRES

The service load and minimum (cold) inflation must comply with the following limitations unless a speed restriction is indicated on the tire.*

Speed Range

(mph)

41 thru 50

31 thru 40

21 thru 30

11 thru 20

6 thru 10

2.6 thru 5

Creep thru 2.5

Creep

(2)

Stationary

% Load Change

+7%

+9%

+12%

+17%

+25%

+45%

+55%

+75%

+105%

Inflation

Pressure Change

No increase

No increase

+10 psi

+15 psi

+20 psi

+20 psi

+20 psi

+30 psi

+30 psi

Note: For bias ply tires please consult the TRA Year Book.

Speed Range

(mph)

41 thru 50

31 thru 40

21 thru 30

11 thru 20

6 thru 10 (2)

2.6 thru 5 (2)

Creep thru 2.5

(2)

Creep

(2) (3)

Stationary (2)

% Load Change

+9%

+16%

+24%

+32%

+60%

+85%

+115%

+140%

+185%

Inflation

Pressure Change

No increase

No increase

+10 psi

+15 psi

+30 psi

+30 psi

+30 psi

+40 psi

+40 psi

Load limits at various speeds for radial ply truck-bus tires, rated at 75 mph or above, used on improved surfaces.

(1)

C. METRIC AND WIDE BASE TIRES D. CONVENTIONAL TIRES

Speed Range

(mph)

41 thru 50

31 thru 40

21 thru 30

11 thru 20

6 thru 10

2.6 thru 5

Creep thru 2.5

Creep (2)

Stationary

% Load Change

+7%

+9%

+12%

+17%

+25%

+45%

+55%

+75%

+105%

Inflation

Pressure Change

No increase

No increase

+10 psi

+15 psi

+20 psi

+20 psi

+20 psi

+30 psi

+30 psi

Speed Range

(mph)

41 thru 50

31 thru 40

21 thru 30

11 thru 20

6 thru 10 (3)

2.6 thru 5 (3)

Creep thru 2.5 (3)

Creep (2)(3)

Stationary (3)

% Load Change

+9%

+16%

+24%

+32%

+60%

+85%

+115%

+140%

+185%

Inflation

Pressure Change

No increase

No increase

+10 psi

+15 psi

+30 psi

+30 psi

+30 psi

+40 psi

+40 psi

(1) These load and inflation changes are only required when exceeding the tire manufacturer’s rated speed for the tire.

(2) Apply these increases to Dual Loads and Inflation Pressures.

(3) Creep – Motion for not over 200 feet in a 30-minute period.

Note 1:

The inflation pressures shown in the referenced tables are minimum cold pressures for the various loads listed.

Higher pressures should be used as follows:

A. When required by the above speed/load table.

B. When higher pressures are desirable to obtain improved operating performance.

For speeds above 20 mph, the combined increases of A and B should not exceed 20 psi above the inflation specified for the

Note 2:

maximum load of the tire.

Load limits at various speeds for:

Tires used in highway service at restricted speed.

Mining and logging tires used in intermittent highway service

*Exceeding the legal speed limit is neither recommended or endorsed.

PROPER APPLICATION OF ON/OFF ROAD (Y AND L) TIRES*

The tires with “Y” or “L” (see Page 25) as the third character in the tread designations are designed and optimized for on/off road applications and are speed restricted. These tires should not be used in applications that operate the tires continuously on highway over an extended period of time or at speeds that exceed the speed rating of the tire. This could lead to heat build up and cause premature or sudden tire failure.

Tires with the “Y” designation are for applications expected to be 80% On-road use and 20% Off-road use.

They have a maximum speed of 65 mph.

Tires with the “L” designation are for applications expected to be 20% On-road use and 80% Off-road use.

Some of the “L” designated tires have a maximum speed of 50 mph while others have maximum speeds of 55, 60 and of 70 mph.

The Tire and Rim Association (TRA) permits operating a 65 mph rated tire at higher speeds with a reduced load and increased inflation. No such permission is granted by TRA for tires with speed rating rated below 65 mph.

Always refer to this MICHELIN Truck Tire Data Book on Page 25 and match the tire to the application when making tire selections.

COLD CLIMATE PRESSURE CORRECTION DATA

Because the pressure inside a tire will decrease when the vehicle is taken from a warm environment to a cold one, some adjustments may be necessary when adjusting the tire pressures of a vehicle to be operated in very cold temperatures.

These adjustments are only necessary if the pressures are verified and adjusted inside a heated garage with an air supply that is also at the higher room temperature.

(No adjustment necessary if done outside.)

In extreme cases, the following table should be used to ensure that the operating pressure and deflection of tires are adequate at the outside ambient temperature.

Using the load and pressure charts below, determine the appropriate “Recommended Pressure” required for the axle load. Then find the same pressure down the left column of the table to the right. Going across to the relevant outside ambient temperature you will find the corrected inflation pressure to be used.

For example:

• A log truck in Alaska has a front axle loaded weight of

12,000 lbs.

• The truck is equipped with 11R24.5 MICHELIN ®

XZY

®

3 tires.

• The recommended pressure for this fitment is 105.

• The truck is parked overnight in a heated garage.

• The outside high forecasted for today is -20ºF.

• The tire pressures are checked and adjusted prior to leaving the heated garage.

According the chart below, the tires should be adjusted to 128.

Adjusted Inflation Pressure (psi)

(when inflating indoors at 65°F [18°C])

Recommended

Pressure

(psi)

95

100

105

110

75

80

85

90

115

120

125

130

119

124

129

134

98

103

109

114

F° 50°

C° 10°

78

83

88

93

127

133

138

144

105

111

116

122

20°

-7°

83

89

94

100

124

130

135

140

103

108

114

119

30°

-1°

81

87

92

98

122

127

132

137

101

106

111

116

40°

4°

80

85

90

95

130

136

141

147

108

113

119

125

Outside Ambient Temperature

10° 0° -10°

-12° -18° -23°

86

91

97

102

88

93

99

105

90

96

102

108

111

116

122

128

133

139

145

150

137

143

148

154

113

119

125

131

140

146

152

158

116

122

128

134

-20°

-29°

92

98

104

110

148

154

160

166

123

129

135

141

-40°

-40°

98

104

110

116

144

150

156

162

119

125

132

138

-30°

-34°

95

101

107

113

151

158

164

171

126

132

139

145

-50°

-46°

100

107

113

119

91

92

CHANGES IN TOP SPEED

WHEN TIRE REVOLUTIONS PER MILE CHANGES

GEAR RATIO

A change in tire dimension will result in a change in engine RPM at a set cruise speed* that will result in a change in speed and fuel economy. The effect of tire size change on gear ratio should be considered in individual operations.

A decrease in tire radius will increase tractive torque and increase indicated top speed. An increase in tire radius will reduce tractive torque and decrease indicated speed.

Tire Revs./Mile – Speed – Size: These factors can affect engine RPM if corresponding changes are not made to engine ratios.

Example: Going from larger diameter tire to smaller diameter tire.

If you currently run a 275/80R22.5 MICHELIN XDN ® 2 tire (511 Tire Revs./Mile) and change to a 445/50R22.5 MICHELIN X One ® XDN ® 2 tire (515 Tire Revs./Mile), the speedometer will indicate a slightly higher speed than the actual speed the vehicle is traveling.

Final Tire Revs./Mile – Initial Tire Revs./Mile =

Initial Tire Revs./Mile

515 - 511 = 0.0078 or .78% (< 1% change)

511

So when your actual speed is 60 mph, your speedometer will read 60.47 mph.

MICHELIN X One Tire Size

445/50R22.5

Dual Size

275/80R22.5

MICHELIN X One Tire

Tire Revs./Mile

515 (X One XDN2)

Dual Tire Revs./Mile

511 (XDN2)

MICHELIN X One Tire Size

455/55R22.5

Dual Size

11R22.5 or 275/80R24.5

MICHELIN X One Tire

Tire Revs./Mile

492 (X One XDN2)

Dual Tire Revs./Mile

496 (XDN2)

Rule of Thumb: When going from a lower Tire Revs./Mile to a higher Tire Revs./Mile, the actual vehicle speed is less than the speedometer reading. When going from a higher Tire Revs./Mile to a lower Tire Revs./Mile, the actual vehicle speed is greater than the speedometer reading.

* Exceeding the legal speed limit is neither recommended nor endorsed.

To determine the proper load/inflation table, always comply with to the markings on the tire sidewall for maximum load at cold pressure.

Load and inflation industry standards are in a constant state of change. Michelin continually updates its product information to reflect these changes.

Therefore, printed material may not reflect the current load and inflation information.

NOTE: Never exceed the wheel manufacturer’s maximum pressure limitation.

S = Single configuration – 2 tires per axle. D = Dual configuration – 4 tires per axle. Loads are indicated per axle.

LOAD / INFLATION TABLE FOR MICHELIN 315/80R22.5 LRL

The following table applies to LRL use with 8.25x22.5 Wheels.

8.25" Wheel –

Michelin recommendation (loads per axle): Minimum dual spacing 13.5" (343 mm)

Dimension

315/80R22.5

8.25" Wheel

Load

Range

L

PSI kPa

lbs. per axle kg. per axle

75

520

80

550

85

590

90

620

95

660

100

690

105

720

110

760

115

790

120*

830

S

D

S 10990 11570 12140 12710 13280 13820 14380 14920 15460 16000

D 20900 22000 23100 24180 25260 26300 27360 28400 29440 30440

4980

9480

5250

9980

5510

10480

5770

10970

6020

11460

6270

11930

6520

12410

6770

12880

7010

13350

7260

13810

Note: Never exceed the wheel manufacturer's maximum cold pressure limitation and/or load rating.

* When used on an 8.25” wheel, the max load and pressure is lower than that indicated on the sidewall.

TECHNICAL SPECIFICATIONS FOR MICHELIN 455/55R22.5 LRM

ON 13.00x22.5 WHEELS STEER AXLE, FIRST LIFE ONLY

Dimension

Load

Range

455/55R22.5

LRM

Loaded Radius in.

19.5

mm.

496

Max. Load Single*

RPM lbs.

psi

493 10000 120

kg.

4535

kPa

830

Dimension

455/55R22.5

13.00" Wheel

Load

Range

LRM

psi 75 80 85 90 95 100 105 110 115 120 kPa 520 550 590 620 660 690 720 760 790 830

lbs. per axle 13740 14460 15180 15880 16600 17280 17980 18660 19340 20000 kg. per axle 6240 6520 6900 7180 7560 7820 8100 8460 8720 9070

* Note: When used on a 13.00" wheel the max load and pressure is lower than that indicated on the sidewall.

93

FRONT AXLE OVERLOAD ON AUTO HAULERS

Recent studies by Michelin’s Customer Engineering Support have shown that Auto Haulers may sometimes exceed the designed load capacity of the front axle tires either across the axle or at one of the two axle ends. Improper positioning of the top front loaded vehicle or positioning of heavier than intended vehicles in the top front position contribute to overload conditions.

275/70R22.5 LRJ

MICHELIN ® 275/70R22.5 XZE ® 2+ and MICHELIN ® XZA2 ® Energy LRJ truck tires have a maximum single tire load of 6,940 lbs at 130 psi with a maximum speed rating of 75 mph

(1)

. See Load and Inflation table below.

(3)

Overloading the 275/70R22.5 LRJ tires (or any highway tire) and/or exceeding the speed rating of the tire is dangerous and may lead to tire failure.

Specifications for 275/70R22.5 MICHELIN

®

XZE

®

2+ and MICHELIN

®

XZA2

®

ENERGY LRJ

(3)

Size

Load

Range

Catalog

Number

Tread

Depth

Max.

Speed

(1)

32nds mph

Loaded

Radius in.

mm

Overall

Diameter in.

mm

Overall Width

(2)

in.

mm

Approved

Wheels

(Measuring wheel listed first.)

Min. Dual

Spacing (2)

in mm

Revs

Per

Mile

Max. Load and Pressure

Single lbs.

psi kg.

kPa

275/70R22.5

XZE2+

275/70R22.5

XZA2 ENERGY

J

78395 19

75

17.6

448 38.0

966 10.9

276 7.50, 8.25 11.9

303 545 6940 130 3150 900

J

90059 18

75

17.6

448 38.0

966 10.9

277 7.50, 8.25

11.9

303 545 6940 130 3150 900

Load and Inflation Table for 275/70R22.5 MICHELIN

®

XZE

®

2+ and MICHELIN

®

XZA2

®

ENERGY LRJ

7.50", 8.25" Wheel,

Max Speed 75 mph

(1)

PSI kPa

85

590

90

620

95

660

100

690

105

720

110

760

115

790

120

830

125

860

130

900

MAXIMUM LOAD AND

PRESSURE ON SIDEWALL

13460

275/70R22.5 LRJ

XZE2+,

XZA2 ENERGY

LBS SINGLE

LBS DUAL

KG SINGLE

KG DUAL

9880

19420

4480

8810

10340 10800 11250 11700 12140

20320 21220 22100 22980 23860

4690 4900 5100 5310 5510

9220 9630 10020 10420 10820

12580 13020

24720 25580

5710 5900

11210 11600

6080

13880 S 6940 LBS AT 130 PSI

6300

D 6395 LBS AT 120 PSI

S 3150 KG AT 900 kPa

D 2900 KG AT 830 kPa

(3)

If an Auto Hauler cannot ensure that the front axle ends were loaded within the limit of the 275/70R22.5 LRJ, the tires should be assumed to have been overloaded, and must be removed and scrapped.

295/60R22.5 LRJ

The recommended alternative fitment for the 275/70R22.5 LRJ is the 295/60R22.5 MICHELIN

®

XZA2

®

Energy LRJ tire MSPN 33215.

Specifications for 295/60R22.5 MICHELIN

®

XZA2

®

ENERGY

Size

295/60R22.5

XZA2 ENERGY

Load

Range

J

Catalog

Number

Tread

Depth

Max.

Speed

(1)

32nds mph

33215 16

65

(5)

Loaded

Radius in.

mm

Overall

Diameter in.

mm

Overall

Width (2)

in.

mm

16.7

424 36.1

918 11.4

290

Approved

Wheels

(Measuring wheel listed first.)

9.00

(4)

Min. Dual

Spacing (2)

in mm

Revs

Per

Mile

Max. Load and Pressure

Single lbs.

psi kg.

kPa

13.0

329 575 7390 130 3350 900

94

(1) Exceeding the legal speed limit is neither recommended nor endorsed.

(2) Overall widths will change 0.1 inch (2.5 mm) for each 1/4 inch change in wheel width. Minimum dual spacing should be adjusted accordingly.

(3) If used on wheels with 120 psi cold ratings the maximum load/tire in single mount is limited to 6,510 lb/tire.

(4) See Page 93 for use on 8.25 x 22.5" wheel.

(5) See Page 93 for use at 75 mph maximum speed.

295/60R22.5 MICHELIN

®

XZA2 ENERGY LRJ AND

295/60R22.5 MICHELIN

®

X MULTIWAY XD LRJ,

ADJUSTED LOAD AND PRESSURE TABLES

FOR USE ON 8.25” WHEEL, OR AT 75 MPH

(1)

295/60R22.5 LRJ – 9.00" Wheel, Max Speed 65 mph

(1)

The 295/60R22.5 MICHELIN ® XZA2 ® Energy and MICHELIN ® X MultiWay XD LRJ are designed to be used on a 9.00 x 22.5" wheel and at a maximum speed of 65 mph.

(1)

(Note that the maximum load and pressure under these conditions match those indicated on the sidewall.)

9.00" Wheel,

Max Speed 65 mph

(1)

295/60R22.5 LRJ

XZA2 ENERGY,

X MULTIWAY XD

PSI kPa

LBS SINGLE

LBS DUAL

KG SINGLE

KG DUAL

85

590

10520

19300

4770

8750

90

620

11010

20200

4990

9160

95

660

11500

21100

5220

9570

100

690

11980

21980

5430

9970

105

720

12460

22860

5650

10370

110

760

12930

23720

5860

10760

115

790

13400

24580

6080

11150

120

830

13860

25440

6290

11540

125

860

14320

26280

6460

11880

DESIGN

MAXIMUM LOAD

AND PRESSURE

PER AXLE

DESIGN

MAXIMUM LOAD

AND PRESSURE

PER TIRE

130 130

900

14780

27120

6700

12300

900

7390

6780

3350

3075

295/60R22.5 LRJ – 9.00" Wheel, Max Speed 75 mph

(1)

The maximum speed of the 295/60R22.5 MICHELIN ® XZA2 ® Energy LRJ and MICHELIN ®

X MultiWay XD LRJ on a 9.00 x 22.5" wheel may be increased to 75 mph (1) by applying the following reduced load and pressure table.

(Note that the maximum load under these conditions is less than that indicated on the sidewall.)

9.00" Wheel,

Max Speed 75 mph

(1)

295/60R22.5 LRJ

XZA2 ENERGY,

X MULTIWAY XD

PSI kPa

LBS SINGLE

LBS DUAL

KG SINGLE

KG DUAL

90

620

10520

19300

4770

8750

95

660

11010

20200

4990

9160

100

690

11500

21100

5220

9570

105

720

11980

21980

5430

9970

110

760

12460

22860

5650

10370

115

790

12930

23720

5860

10760

120

830

13400

24580

6080

11150

125

860

13860

25440

6290

11540

ADJUSTED

MAXIMUM LOAD

AND PRESSURE

PER AXLE

130

ADJUSTED

MAXIMUM LOAD

AND PRESSURE

PER TIRE

130

900

14320

26280

6460

11880

900

7160

6570

3230

2970

295/60R22.5 LRJ – 8.25" Wheel, Max Speed 75 mph

(1)

In addition to running at 75 mph (1) , the 295/60R22.5 MICHELIN ® XZA2 ® Energy LRJ and

MICHELIN

®

X MultiWay XD LRJ may be mounted on an 8.25 x 22.5" wheel by applying the following further reduced load and pressure table.

(Note that the maximum load and pressure under these conditions are less than that indicated on the sidewall.)

8.25" Wheel

Max Speed 75 mph

(1)

295/60R22.5 LRJ

XZA2 ENERGY,

X MULTIWAY XD

PSI 70 75 80 85 90 95 100 105 110 115 kPa 480 520 550 590 620 660 690 720 760 790

LBS SINGLE 8600

LBS DUAL 16160

9030

16980

9350

17640

9850

17920

10250

18660

10710

19760

11040

20100

11420

20780

11680

21420

12170

22140

KG SINGLE

KG DUAL

3900

7320

4100

7720

4240

8000

4460

8120

4660

8480

4860

8960

5000

9120

5180

9440

5300

9720

5520

10040

ADJUSTED

MAXIMUM LOAD

AND PRESSURE

PER AXLE

120

ADJUSTED

MAXIMUM LOAD

AND PRESSURE

PER TIRE

120

830

12350

22700

5600

10300

830

6175

5675

2800

2575

(1) Exceeding the legal speed limit is neither recommended nor endorsed.

Load and inflation industry standards are in a constant state of change. Michelin continually updates its product information to reflect these changes. Therefore, printed material may not reflect the current load and inflation information.

NOTE: The actual load and inflation pressure used must not exceed the wheel manufacturer's maximum conditions.

Never exceed a wheel manufacturer's limits without permission of the component manufacturer.

Single configuration = 2 tires per axle. Dual configuration = 4 tires per axle.

Loads are indicated per axle.

Always refer to the MICHELIN

®

Truck Tire Data Book (MWL40731) and MICHELIN

®

Truck Tire Service Manual (MWL40732) for proper tire selection, inflation and maintenance.

95

96

BALANCE AND RUNOUT

Current Technology & Maintenance Council (TMC) limits from TMC RP 214C, Tire/Wheel End Balance and Runout, are listed in the tables below.

TABLE A:

RECOMMENDED BALANCE AND RUNOUT VALUES FOR DISC WHEELS AND DEMOUNTABLE RIMS

Tubeless Steel Disc Wheels

Balance

(See Note 2)

6 oz. max

Radial Runout

(See Note 3)

0.070 inch max

Lateral Runout

(See Note 3)

0.070 inch max

Tubeless Aluminum Disc Wheels

Tubeless Demountable Rims

Wide Base Wheels

Steel

Aluminum

4 oz. max

N/A

See Note 1

See Note 1

0.030 inch max

0.070 inch max

0.075 inch max

0.030 inch max

0.030 inch max

0.070 inch max

0.075 inch max

0.030 inch max

Note 1: Refer to the manufacturer’s specifications for balance and runout values.

Note 2: Amount of weight applied to wheel to balance individual wheel component.

Note 3: For steel wheels, the area adjacent to the rim butt weld is not considered in runout measurements.

TABLE B:

TIRE/WHEEL ASSEMBLY BALANCE AND RUNOUT LIMITS

Tire Position

Steer

19.5

Tire/Wheel

14 oz.

Maximum total weight correction expressed in ounces of weight required to correct at wheel diameter per rotating assembly

Drive/Trailer 18 oz.

Steer 0.095"

Lateral runout for rotating assembly

Radial runout for rotating assembly

Drive/Trailer

Steer

Drive/Trailer

0.125"

0.095"

0.125"

Over The Road

Applications

16 oz.

20 oz.

0.095"

0.125"

0.095"

0.125"

On/Off-Road

Applications

18 oz.

22 oz.

0.110"

0.125"

0.110"

0.125"

Wide Base

Tire/Wheel

24 oz.

28 oz.

0.125"

0.125"

0.125"

0.125"

Note: If tire and wheel assembly is within these limits and ride problem still exists, refer to TMC RP 648, Troubleshooting

Ride Complaints.

TRUCK TIRE BRANDING

1.

The following limits apply when branding MICHELIN ® truck tires using equipment without accurate temperature control or which may exceed 465 degrees fahrenheit (240°C). (Hand held equipment is typically

used for this “HOT BRANDING.”)

a. Brand Temperature

570°F (300°C)

480°F (250°C)

Maximum Depth

1⁄ 64 inch (0.4 mm)

1⁄ 32 inch (0.8 mm) b. Only brand in the “BRAND TIRE HERE” area.

2.

For equipment capable of “COLD BRANDING” i.e. controlled temperatures below 465°F (240°C), the following restrictions apply: a. Temperature b. Contact pressure c. Time of contact d. Character Height e. Character Depth f. Location:

Circumferentially

Radially

—

—

Maximum 465°F (240°C)

Maximum 100 psi

Maximum 1 Minute

Maximum 1 Inch

Maximum 0.040 Inch (1.0 mm) in the “BRAND TIRE HERE” area, or centered above it.

in the “BRAND TIRE HERE” area with no portion of any character extending more than 1” above the outline of the area.

TREAD DEPTH MEASUREMENT ON TIRES RETREADED

WITH THE MRT XDU

®

S PRE-MOLD

™

RETREAD

The MRT XDU ® S Pre-Mold ™ Retread has a lug design optimized for high scrub, high traction operations as well as 32 ⁄ 32nds original tread depth. The tread design incorporates bridges between the lugs in order to stabilize the lugs. See photo below.

Care must be taken when taking tread depth measurements in order to get an accurate determination of the remaining tread depth.

Do not take measurements on top of the bridges! This will give a false reading and may lead to the tire being pulled from service earlier than necessary. There may be as much as 4 ⁄ 32nds difference in the measurements taken on top of the bridge as opposed to taking it at the bottom of the groove.

Bridges

FMVSS -119 Section (c) and The Federal Motor

Carrier Safety Regulation Part 393.75 state that

(non – steer axle) “tires shall have a tread groove pattern depth of at least 2 ⁄ 32nds of an inch when measured in a major tread groove.

The measurement shall not be made where tie bars, humps or fillets are located.”

97

98

PROPER APPLICATION OF URBAN (“U”) TIRES

The tires with the “U” designation are designed and optimized for urban applications and should not be used in nonurban applications including but not limited to, long haul and RV/motorhomes/coaches. These aforementioned applications may subject the tires to continuous use over an extended period of time. This could lead to heat build up and may cause the tire to fail prematurely and/or suddenly. See information below.

ALWAYS REFER TO THE MICHELIN ® DATA BOOK AND MATCH THE TIRE TO THE APPLICATION WHEN MAKING TIRE

SELECTIONS.

TREAD PATTERN DESIGNATIONS

Tire manufacturers will use specific numbers or letters to identify different types of tread patterns or casing construction.

Michelin uses letters to denote specific qualities and/or applications for its tires.

TIRE APPLICATIONS

The specific tread design used should only be considered after the vehicle type and user vocation has been examined.

There are several categories of tire service applications:

X Z

MICHELIN ®

Radial

Position

U

Application

2

Index

(Used to denote product evolution)

HIGHWAY

REGIONAL

A Heavy loads and high speeds for extended periods of time. Primarily interstate or divided highway.

E

Medium to heavy loads, frequently on 2-lane roads. Vehicles generally return to home base at night.

URBAN

U

Stop-and-go delivery ... service within a limited radius – metro and suburban.

ON/OFF ROAD

Y

Heavy loads and slower speeds, operating on a mixture of improved secondary and aggressive road surfaces.

OFF ROAD

L

Very heavy loads normally on poor or unimproved surfaces.

REGROOVING THE MICHELIN

®

XZU

®

2 TIRE

Only MICHELIN ® truck tires that are marked

“REGROOVABLE” on the sidewall may be regrooved.

After regrooving, you must have at least 3 ⁄ 32nds of under tread covering the top ply. If steel is exposed, the tire must be scrapped or retreaded. In addition, some tread designs will have a regrooving depth indicator as shown below. Do not regroove below the depth of the indicator.

Regrooving depth indicators are holes (of 4 mm depth) situated on the treadwear indicator to indicate the recommended regrooving depth for these tires.

It is the responsibility of the regroover to assure that all

Federal Regulations are met. See US Code of Federal

Regulations: Title 49, Transportation; Parts 569 and

393.75.

One of the regulations governing regrooving tires requires that a regrooved tire must have a minimum of

90 linear inches of tread edge per linear foot of the circumference.

The MICHELIN ® XZU ® 2 tire has only 3 circumferential tread grooves. To meet the 569.7 (iii) requirement, additional lateral grooves must be added as shown below.

U. S. CODE OF FEDERAL REGULATIONS:

TITLE 49, TRANSPORTATION; PARTS 569.7 AND 393.75

(EXTRACTS)

For complete regulations, go to: ecfr.gpoaccess.gov

PART 393.75, SECTION D

“(d) No bus shall be operated with regrooved, recapped or retreaded tires on the front wheels.”

99

100

NOTES