285/70R17 tire size
A 285/70R17 tire is 32.71 inches (830.8 mm) tall, 11.22 in (285 mm) wide and fits a 17-inch wheel. In inch notation it is roughly a 32.7x11.2R17 — a "33-inch" tire.
| Overall diameter | 32.71 in | 830.8 mm |
|---|---|---|
| Section width | 11.22 in | 285 mm |
| Sidewall height | 7.85 in | 199.5 mm |
| Circumference | 102.76 in | 2,610 mm |
| Revolutions | 616.6 per mile | 383.1 per km |
| Rim diameter | 17 in | 431.8 mm |
Compare 285/70R17 with another size
Alternative sizes on the same 17-inch wheel
Sizes in use within ±3 % of the overall diameter of 285/70R17:
Plus and minus sizes for 285/70R17
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 285/75R16 | Minus 1 (16 in) | 32.83 in | +0.37% |
| 265/70R18 | Plus 1 (18 in) | 32.61 in | −0.31% |
| 285/65R18 | Plus 1 (18 in) | 32.59 in | −0.37% |
| 275/70R18 | Plus 1 (18 in) | 33.16 in | +1.37% |
| 275/65R18 | Plus 1 (18 in) | 32.07 in | −1.94% |
| 255/65R19 | Plus 2 (19 in) | 32.05 in | −2.01% |
| 265/60R20 | Plus 3 (20 in) | 32.52 in | −0.58% |
| 275/60R20 | Plus 3 (20 in) | 32.99 in | +0.87% |
| 285/55R20 | Plus 3 (20 in) | 32.34 in | −1.12% |
| 305/55R20 | Plus 3 (20 in) | 33.21 in | +1.53% |
Nearby 17-inch sizes
Reading the 285/70R17 size
- 285 — section width in millimetres (11.22 in).
- 70 — aspect ratio: the sidewall is 70 % of the width, 199.5 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 17 — fits a 17-inch diameter wheel.
The load index and speed rating (for example 91V) follow the size on the sidewall. They must meet at least the values on your vehicle's tire placard.