| Cooper Tires: Commercial |
| Roadmaster RM120 |
| Tread depths are optimized for applications, with 12/32" for larger sizes and a deeper 16/32" for the 255/70R22.5. Wide shoulder ribs resist scrubbing and rib edge sipes promote even wear. |
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Tire Specifications
| Name |
Tire Size |
Service Description |
UTQG |
Load Range |
Sidewall |
Approved Rim Width |
Measured Rim Width |
Section Width |
Overall Diameter |
Tread Width |
Max Load |
Tread Depth |
| Roadmaster RM120 |
11R22.5 |
144 L |
0 |
G |
BLK |
7.5 - 8.25 |
8.25 |
10.88 |
41.11 |
0 |
6175 |
12 |
| Roadmaster RM120 |
11R22.5 |
146 L |
0 |
H |
BLK |
7.5 - 8.25 |
8.25 |
10.88 |
41.11 |
0 |
6610 |
12 |
| Roadmaster RM120 |
295/75R22.5 |
144 L |
0 |
G |
BLK |
8.25 - 9 |
9 |
11.54 |
39.35 |
0 |
6175 |
12 |
| Roadmaster RM120 |
255/70R22.5 |
140 L |
0 |
H |
BLK |
7.5 - 8.25 |
7.5 |
10.16 |
36.68 |
0 |
5510 |
17.5 |
| Roadmaster RM120 |
11R24.5 |
146 L |
0 |
G |
BLK |
7.5 - 8.25 |
8.25 |
10.89 |
43.13 |
0 |
6610 |
12 |
| Roadmaster RM120 |
11R24.5 |
149 L |
0 |
H |
BLK |
7.5 - 8.25 |
8.25 |
10.89 |
43.13 |
0 |
7160 |
12 |
| Roadmaster RM120 |
285/75R24.5 |
144 L |
0 |
G |
BLK |
8.25 - 8.25 |
8.25 |
10.81 |
40.92 |
0 |
6175 |
12 |
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