285/45R20 tire size
A 285/45R20 tire is 30.10 in (764.5 mm) tall and 11.22 in (285.0 mm) wide, and turns 670 revolutions per mile.
- 30.10 inOverall diameter
- 5.05 inSidewall height
- 670Revolutions per mile
- 30.1x11.2R20Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 30.10 in | 764.5 mm |
| Section width | 11.22 in | 285.0 mm |
| Sidewall height | 5.05 in | 128.3 mm |
| Rim diameter | 20.00 in | 508.0 mm |
| Circumference | 94.56 in | 2,402 mm |
| Revolutions per mile | 670 | |
| Flotation equivalent | 30.1x11.2R20 (approx.) | |
285/45R20 is a 20-inch tire with a 285 mm (11.22 in) section width and a 45% aspect ratio, giving a 5.05-inch sidewall and a flotation-style size of about 30.1x11.2R20.
Its overall diameter is 30.10 inches, so it rolls 94.6 inches per revolution and turns about 670 times per mile.
68 other sizes in this list are within 3% of that diameter.
Compare 285/45R20 with plausible swaps
- 275/55R18 vs 285/45R20 (−0.63%)
- 235/65R18 vs 285/45R20 (−0.24%)
- 255/60R18 vs 285/45R20 (−0.17%)
- 275/50R19 vs 285/45R20 (−0.90%)
- 255/55R19 vs 285/45R20 (−0.18%)
- 235/60R19 vs 285/45R20 (+0.01%)
- 285/40R20 vs 285/45R20 (−3.73%)
- 265/45R20 vs 285/45R20 (−2.35%)
- 275/45R20 vs 285/45R20 (−1.18%)
- 255/50R20 vs 285/45R20 (−0.20%)
- 285/45R20 vs 235/55R20 (+0.26%)
- 285/45R20 vs 265/50R20 (+1.11%)
- 285/45R20 vs 295/45R20 (+1.18%)
- 285/45R20 vs 305/45R20 (+2.35%)
- 285/45R20 vs 285/50R20 (+3.73%)
- 285/45R20 vs 285/40R21 (−0.41%)
- 285/45R20 vs 255/45R21 (−0.21%)
- 285/45R20 vs 295/40R21 (+0.64%)
- 285/45R20 vs 265/45R21 (+0.97%)
- 285/45R20 vs 285/35R22 (−0.81%)
- 285/45R20 vs 255/40R22 (−0.22%)
- 285/45R20 vs 265/40R22 (+0.82%)
- 285/45R20 vs 305/35R22 (+1.02%)
Sizes within 3% of 30.10 in diameter
- 235/60R19 30.10 in (+0.01%)
- 255/70R16 30.06 in (−0.14%)
- 255/65R17 30.05 in (−0.16%)
- 255/60R18 30.05 in (−0.17%)
- 255/55R19 30.04 in (−0.18%)
- 255/50R20 30.04 in (−0.20%)
- 255/45R21 30.04 in (−0.21%)
- 255/40R22 30.03 in (−0.22%)
- 235/65R18 30.03 in (−0.24%)
- 235/55R20 30.18 in (+0.26%)
- 30x9.50R15 30.00 in (−0.33%)
- 275/60R17 29.99 in (−0.35%)
- 285/40R21 29.98 in (−0.41%)
- 235/70R17 29.95 in (−0.48%)
- 225/75R17 30.29 in (+0.63%)
- 275/55R18 29.91 in (−0.63%)
- 295/40R21 30.29 in (+0.64%)
- 235/75R16 29.88 in (−0.73%)
- 285/35R22 29.85 in (−0.81%)
- 265/40R22 30.35 in (+0.82%)
- 275/50R19 29.83 in (−0.90%)
- 215/85R16 30.39 in (+0.97%)
- 265/45R21 30.39 in (+0.97%)
- 305/35R22 30.41 in (+1.02%)
- 265/50R20 30.43 in (+1.11%)
- 275/45R20 29.74 in (−1.18%)
- 295/45R20 30.45 in (+1.18%)
- 245/75R16 30.47 in (+1.23%)
- 265/55R19 30.48 in (+1.26%)
- 245/70R17 30.50 in (+1.35%)
- 245/45R21 29.68 in (−1.39%)
- 315/35R21 29.68 in (−1.39%)
- 265/60R18 30.52 in (+1.40%)
- 275/40R21 29.66 in (−1.45%)
- 245/65R18 30.54 in (+1.47%)
- 245/50R20 29.65 in (−1.50%)
- 265/65R17 30.56 in (+1.54%)
- 245/55R19 29.61 in (−1.62%)
- 265/70R15 29.61 in (−1.64%)
- 305/40R20 29.61 in (−1.64%)
- 265/70R16 30.61 in (+1.69%)
- 245/55R20 30.61 in (+1.70%)
- 245/60R18 29.57 in (−1.74%)
- 265/75R15 30.65 in (+1.83%)
- 245/65R17 29.54 in (−1.86%)
- 275/40R22 30.66 in (+1.87%)
- 265/60R17 29.52 in (−1.92%)
- 245/70R16 29.50 in (−1.98%)
- 245/75R15 29.47 in (−2.09%)
- 285/30R24 30.73 in (+2.11%)
- 275/45R21 30.74 in (+2.15%)
- 315/30R22 29.44 in (−2.18%)
- 265/50R19 29.43 in (−2.21%)
- 275/25R24 29.41 in (−2.28%)
- 265/45R20 29.39 in (−2.35%)
- 305/45R20 30.81 in (+2.35%)
- 275/50R20 30.83 in (+2.42%)
- 265/40R21 29.35 in (−2.50%)
- 235/45R21 29.33 in (−2.56%)
- 235/75R17 30.88 in (+2.59%)
- 265/35R22 29.30 in (−2.64%)
- 295/40R20 29.29 in (−2.68%)
- 275/55R19 30.91 in (+2.69%)
- 225/75R16 29.29 in (−2.69%)
- 285/40R22 30.98 in (+2.92%)
- 275/60R18 30.99 in (+2.97%)
- 31x10.50R15 31.00 in (+3.00%)
- 31x10.50R16 31.00 in (+3.00%)
Open 285/45R20 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.