285/70R18 tire size
A 285/70R18 tire is 33.71 in (856.2 mm) tall and 11.22 in (285.0 mm) wide, and turns 598 revolutions per mile.
- 33.71 inOverall diameter
- 7.85 inSidewall height
- 598Revolutions per mile
- 33.7x11.2R18Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 33.71 in | 856.2 mm |
| Section width | 11.22 in | 285.0 mm |
| Sidewall height | 7.85 in | 199.5 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 105.90 in | 2,690 mm |
| Revolutions per mile | 598 | |
| Flotation equivalent | 33.7x11.2R18 (approx.) | |
285/70R18 is a 18-inch tire with a 285 mm (11.22 in) section width and a 70% aspect ratio, giving a 7.85-inch sidewall and a flotation-style size of about 33.7x11.2R18.
Its overall diameter is 33.71 inches, so it rolls 105.9 inches per revolution and turns about 598 times per mile.
26 other sizes in this list are within 3% of that diameter.
Compare 285/70R18 with plausible swaps
- 33x12.50R16 vs 285/70R18 (−2.10%)
- 255/85R16 vs 285/70R18 (−1.90%)
- 315/75R16 vs 285/70R18 (+2.65%)
- 33x12.50R17 vs 285/70R18 (−2.10%)
- 255/80R17 vs 285/70R18 (−1.92%)
- 295/70R17 vs 285/70R18 (−1.33%)
- 285/75R17 vs 285/70R18 (+0.36%)
- 315/70R17 vs 285/70R18 (+1.94%)
- 35x11.50R17 vs 285/70R18 (+3.83%)
- 35x12.50R17 vs 285/70R18 (+3.83%)
- 285/65R18 vs 285/70R18 (−3.33%)
- 265/70R18 vs 285/70R18 (−3.27%)
- 33x12.50R18 vs 285/70R18 (−2.10%)
- 275/70R18 vs 285/70R18 (−1.64%)
- 285/70R18 vs 295/70R18 (+1.64%)
- 285/70R18 vs 305/70R18 (+3.27%)
- 285/70R18 vs 285/75R18 (+3.33%)
- 285/70R18 vs 35x12.50R18 (+3.83%)
- 285/70R18 vs 33x12.50R20 (−2.10%)
- 285/70R18 vs 305/55R20 (−1.48%)
- 285/70R18 vs 285/60R20 (−0.72%)
- 285/70R18 vs 295/60R20 (+0.68%)
- 285/70R18 vs 275/65R20 (+1.09%)
- 285/70R18 vs 315/60R20 (+3.48%)
- 285/70R18 vs 35x12.50R20 (+3.83%)
- 285/70R18 vs 35x13.50R20 (+3.83%)
- 285/70R18 vs 325/60R20 (+4.88%)
Sizes within 3% of 33.71 in diameter
- 285/75R17 33.83 in (+0.36%)
- 325/45R22 33.52 in (−0.57%)
- 295/60R20 33.94 in (+0.68%)
- 285/60R20 33.46 in (−0.72%)
- 275/65R20 34.07 in (+1.09%)
- 295/70R17 33.26 in (−1.33%)
- 285/50R22 33.22 in (−1.45%)
- 305/55R20 33.21 in (−1.48%)
- 275/70R18 33.16 in (−1.64%)
- 295/70R18 34.26 in (+1.64%)
- 255/85R16 33.07 in (−1.90%)
- 255/80R17 33.06 in (−1.92%)
- 315/70R17 34.36 in (+1.94%)
- 33x12.50R15 33.00 in (−2.10%)
- 33x12.50R16 33.00 in (−2.10%)
- 33x12.50R18 33.00 in (−2.10%)
- 33x12.50R20 33.00 in (−2.10%)
- 33x12.50R17 33.00 in (−2.10%)
- 33x12.50R22 33.00 in (−2.10%)
- 275/60R20 32.99 in (−2.13%)
- 285/75R16 32.83 in (−2.60%)
- 315/75R16 34.60 in (+2.65%)
- 305/70R16 32.81 in (−2.66%)
- 305/45R22 32.81 in (−2.67%)
- 295/55R20 32.78 in (−2.77%)
- 285/70R17 32.71 in (−2.97%)
Open 285/70R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.