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Roadmaster
Roadmaster RM170 215/75R17.50
Roadmaster RM170 215/75R17.50
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The Roadmaster RM170 in 215/75R17 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 215/75R17 means
In the size 215/75R17, 215 is the section width in millimeters (8.46 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 161.2 mm (6.35 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 29.70 inches, turning roughly 679 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.
The service description on this tire decodes to a load index of 135 — a maximum load of 4,806 lbs per tire. The speed symbol L corresponds to a maximum sustained speed of 75 mph.
Specifications
| Size | 215/75R17.50 |
| Service Description | 135L |
| Load Index | 135 |
| Speed Rating | L |
| Section Width (mm) | 215 |
| Aspect Ratio | 75 |
| Temperature Grade | TIRE RIM DIAMETER=17.5TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY= |
Frequently asked questions
What does 135L mean on the Roadmaster RM170?
135L breaks down as load index 135 — rated for 4,806 lbs per tire — with an L speed rating, good for a maximum sustained 75 mph.
Will 215/75R17 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 215/75R17, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
How fast does this tire ship?
Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.
Keep shopping
Browse Roadmaster tires, see every Roadmaster RM170 size, or view all tires at ThreePiece.us.
- BRAND:
- Roadmaster
- MODEL:
- RM170
- SIZE:
- 215/75R17.50
- ASPECT RATIO:
- 75
- LOAD INDEX:
- 135
- SECTION WIDTH:
- 215
- SERVICE DESCRIPTION:
- 135L
- SPEED INDEX:
- L
- TEMPERATURE:
- TIRE RIM DIAMETER=17.5TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=
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