285/55R20 tire size
A 285/55R20 tire is 32.34 in (821.5 mm) tall and 11.22 in (285.0 mm) wide, and turns 624 revolutions per mile.
- 32.34 inOverall diameter
- 6.17 inSidewall height
- 624Revolutions per mile
- 32.3x11.2R20Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 32.34 in | 821.5 mm |
| Section width | 11.22 in | 285.0 mm |
| Sidewall height | 6.17 in | 156.8 mm |
| Rim diameter | 20.00 in | 508.0 mm |
| Circumference | 101.61 in | 2,581 mm |
| Revolutions per mile | 624 | |
| Flotation equivalent | 32.3x11.2R20 (approx.) | |
285/55R20 is a 20-inch tire with a 285 mm (11.22 in) section width and a 55% aspect ratio, giving a 6.17-inch sidewall and a flotation-style size of about 32.3x11.2R20.
Its overall diameter is 32.34 inches, so it rolls 101.6 inches per revolution and turns about 624 times per mile.
47 other sizes in this list are within 3% of that diameter.
Compare 285/55R20 with plausible swaps
- 255/70R18 vs 285/55R20 (−0.89%)
- 275/65R18 vs 285/55R20 (−0.83%)
- 285/65R18 vs 285/55R20 (+0.75%)
- 265/70R18 vs 285/55R20 (+0.82%)
- 285/50R20 vs 285/55R20 (−3.47%)
- 265/55R20 vs 285/55R20 (−2.68%)
- 275/55R20 vs 285/55R20 (−1.34%)
- 305/50R20 vs 285/55R20 (−1.03%)
- 255/60R20 vs 285/55R20 (−0.91%)
- 285/55R20 vs 265/60R20 (+0.55%)
- 285/55R20 vs 295/55R20 (+1.34%)
- 285/55R20 vs 275/60R20 (+2.01%)
- 285/55R20 vs 33x12.50R20 (+2.03%)
- 285/55R20 vs 305/55R20 (+2.68%)
- 285/55R20 vs 285/60R20 (+3.47%)
- 285/55R20 vs 275/50R21 (−1.59%)
- 285/55R20 vs 275/45R22 (−1.85%)
- 285/55R20 vs 285/45R22 (−0.75%)
- 285/55R20 vs 305/45R22 (+1.44%)
- 285/55R20 vs 33x12.50R22 (+2.03%)
- 285/55R20 vs 285/50R22 (+2.71%)
- 285/55R20 vs 325/45R22 (+3.63%)
Sizes within 3% of 32.34 in diameter
- 305/35R24 32.41 in (+0.19%)
- 265/60R20 32.52 in (+0.55%)
- 275/70R17 32.16 in (−0.57%)
- 295/35R24 32.13 in (−0.66%)
- 285/65R18 32.59 in (+0.75%)
- 285/45R22 32.10 in (−0.75%)
- 265/70R18 32.61 in (+0.82%)
- 305/65R17 32.61 in (+0.83%)
- 275/65R18 32.07 in (−0.83%)
- 255/75R17 32.06 in (−0.88%)
- 255/70R18 32.06 in (−0.89%)
- 255/60R20 32.05 in (−0.91%)
- 305/50R20 32.01 in (−1.03%)
- 32x11.50R15 32.00 in (−1.06%)
- 285/70R17 32.71 in (+1.13%)
- 275/55R20 31.91 in (−1.34%)
- 295/55R20 32.78 in (+1.34%)
- 305/45R22 32.81 in (+1.44%)
- 305/70R16 32.81 in (+1.45%)
- 285/75R16 32.83 in (+1.51%)
- 275/50R21 31.83 in (−1.59%)
- 235/80R17 31.80 in (−1.67%)
- 275/45R22 31.74 in (−1.85%)
- 235/85R16 31.73 in (−1.90%)
- 275/60R20 32.99 in (+2.01%)
- 33x12.50R17 33.00 in (+2.03%)
- 33x12.50R22 33.00 in (+2.03%)
- 33x12.50R15 33.00 in (+2.03%)
- 33x12.50R16 33.00 in (+2.03%)
- 33x12.50R18 33.00 in (+2.03%)
- 33x12.50R20 33.00 in (+2.03%)
- 265/75R16 31.65 in (−2.14%)
- 255/80R17 33.06 in (+2.23%)
- 255/85R16 33.07 in (+2.24%)
- 265/70R17 31.61 in (−2.28%)
- 305/40R22 31.61 in (−2.28%)
- 285/65R17 31.59 in (−2.34%)
- 265/65R18 31.56 in (−2.41%)
- 275/70R18 33.16 in (+2.52%)
- 265/55R20 31.48 in (−2.68%)
- 305/55R20 33.21 in (+2.68%)
- 245/75R17 31.47 in (−2.70%)
- 285/60R18 31.46 in (−2.71%)
- 285/50R22 33.22 in (+2.71%)
- 265/50R21 31.43 in (−2.81%)
- 295/70R17 33.26 in (+2.84%)
- 265/45R22 31.39 in (−2.95%)
Open 285/55R20 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.