285/40R20 tire size
A 285/40R20 tire is 28.98 in (736.0 mm) tall and 11.22 in (285.0 mm) wide, and turns 696 revolutions per mile.
- 28.98 inOverall diameter
- 4.49 inSidewall height
- 696Revolutions per mile
- 29.0x11.2R20Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 28.98 in | 736.0 mm |
| Section width | 11.22 in | 285.0 mm |
| Sidewall height | 4.49 in | 114.0 mm |
| Rim diameter | 20.00 in | 508.0 mm |
| Circumference | 91.03 in | 2,312 mm |
| Revolutions per mile | 696 | |
| Flotation equivalent | 29.0x11.2R20 (approx.) | |
285/40R20 is a 20-inch tire with a 285 mm (11.22 in) section width and a 40% aspect ratio, giving a 4.49-inch sidewall and a flotation-style size of about 29.0x11.2R20.
Its overall diameter is 28.98 inches, so it rolls 91.0 inches per revolution and turns about 696 times per mile.
71 other sizes in this list are within 3% of that diameter.
Compare 285/40R20 with plausible swaps
- 255/55R18 vs 285/40R20 (+0.23%)
- 235/60R18 vs 285/40R20 (+0.43%)
- 225/55R19 vs 285/40R20 (−0.80%)
- 275/45R19 vs 285/40R20 (−0.80%)
- 255/50R19 vs 285/40R20 (+0.22%)
- 285/45R19 vs 285/40R20 (+0.42%)
- 235/55R19 vs 285/40R20 (+0.69%)
- 285/35R20 vs 285/40R20 (−3.87%)
- 265/40R20 vs 285/40R20 (−2.17%)
- 275/40R20 vs 285/40R20 (−1.09%)
- 285/40R20 vs 255/45R20 (+0.20%)
- 285/40R20 vs 295/40R20 (+1.09%)
- 285/40R20 vs 305/40R20 (+2.17%)
- 285/40R20 vs 285/45R20 (+3.87%)
- 285/40R20 vs 245/40R21 (−0.90%)
- 285/40R20 vs 285/35R21 (−0.42%)
- 285/40R20 vs 255/40R21 (+0.19%)
- 285/40R20 vs 295/35R21 (+0.53%)
- 285/40R20 vs 285/30R22 (−0.84%)
- 285/40R20 vs 245/35R22 (−0.77%)
- 285/40R20 vs 295/30R22 (−0.03%)
- 285/40R20 vs 255/35R22 (+0.18%)
- 285/40R20 vs 265/35R22 (+1.13%)
Sizes within 3% of 28.98 in diameter
- 295/30R22 28.97 in (−0.03%)
- 235/70R16 28.95 in (−0.08%)
- 235/65R17 29.03 in (+0.18%)
- 255/35R22 29.03 in (+0.18%)
- 255/40R21 29.03 in (+0.19%)
- 255/45R20 29.04 in (+0.20%)
- 255/50R19 29.04 in (+0.22%)
- 255/55R18 29.04 in (+0.23%)
- 255/60R17 29.05 in (+0.24%)
- 255/65R16 29.05 in (+0.26%)
- 255/70R15 29.06 in (+0.27%)
- 235/75R15 28.88 in (−0.34%)
- 285/45R19 29.10 in (+0.42%)
- 285/35R21 28.85 in (−0.42%)
- 235/60R18 29.10 in (+0.43%)
- 295/35R21 29.13 in (+0.53%)
- 235/55R19 29.18 in (+0.69%)
- 245/35R22 28.75 in (−0.77%)
- 225/55R19 28.74 in (−0.80%)
- 275/45R19 28.74 in (−0.80%)
- 285/30R22 28.73 in (−0.84%)
- 245/40R21 28.72 in (−0.90%)
- 215/75R16 28.70 in (−0.96%)
- 245/45R20 28.68 in (−1.02%)
- 315/35R20 28.68 in (−1.02%)
- 325/30R21 28.68 in (−1.03%)
- 225/75R16 29.29 in (+1.07%)
- 275/40R20 28.66 in (−1.09%)
- 295/40R20 29.29 in (+1.09%)
- 265/35R22 29.30 in (+1.13%)
- 245/50R19 28.65 in (−1.14%)
- 225/60R18 28.63 in (−1.20%)
- 235/45R21 29.33 in (+1.21%)
- 245/55R18 28.61 in (−1.26%)
- 265/40R21 29.35 in (+1.28%)
- 275/35R21 28.58 in (−1.37%)
- 245/60R17 28.57 in (−1.39%)
- 265/45R20 29.39 in (+1.43%)
- 275/25R24 29.41 in (+1.51%)
- 245/65R16 28.54 in (−1.51%)
- 265/50R19 29.43 in (+1.58%)
- 225/65R17 28.52 in (−1.59%)
- 315/30R22 29.44 in (+1.60%)
- 275/30R22 28.50 in (−1.66%)
- 245/75R15 29.47 in (+1.70%)
- 245/70R16 29.50 in (+1.82%)
- 265/60R17 29.52 in (+1.88%)
- 265/50R18 28.43 in (−1.87%)
- 245/65R17 29.54 in (+1.94%)
- 225/70R16 28.40 in (−1.98%)
- 265/45R19 28.39 in (−2.02%)
- 245/60R18 29.57 in (+2.07%)
- 265/70R15 29.61 in (+2.17%)
- 265/40R20 28.35 in (−2.17%)
- 305/40R20 29.61 in (+2.17%)
- 245/55R19 29.61 in (+2.19%)
- 235/45R20 28.33 in (−2.24%)
- 245/50R20 29.65 in (+2.31%)
- 265/35R21 28.30 in (−2.32%)
- 275/40R21 29.66 in (+2.36%)
- 295/40R19 28.29 in (−2.36%)
- 225/75R15 28.29 in (−2.38%)
- 245/45R21 29.68 in (+2.43%)
- 315/35R21 29.68 in (+2.43%)
- 265/30R22 28.26 in (−2.47%)
- 235/50R19 28.25 in (−2.50%)
- 275/45R20 29.74 in (+2.65%)
- 305/30R21 28.20 in (−2.66%)
- 235/55R18 28.18 in (−2.76%)
- 295/35R20 28.13 in (−2.92%)
- 275/50R19 29.83 in (+2.93%)
Open 285/40R20 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.