285/30R20 tire size

A 285/30R20 tire is 26.73 in (679.0 mm) tall and 11.22 in (285.0 mm) wide, and turns 754 revolutions per mile.

• 26.73 inOverall diameter
• 3.37 inSidewall height
• 754Revolutions per mile
• 26.7x11.2R20Flotation equivalent

285/30R20 is a 20-inch tire with a 285 mm (11.22 in) section width and a 30% aspect ratio, giving a 3.37-inch sidewall and a flotation-style size of about 26.7x11.2R20.

Its overall diameter is 26.73 inches, so it rolls 84.0 inches per revolution and turns about 754 times per mile.

67 other sizes in this list are within 3% of that diameter.

Compare 285/30R20 with plausible swaps

• 215/50R18 vs 285/30R20 (−1.00%)
• 275/40R18 vs 285/30R20 (−0.27%)
• 245/45R18 vs 285/30R20 (−0.19%)
• 225/50R18 vs 285/30R20 (+0.47%)
• 285/40R18 vs 285/30R20 (+0.91%)
• 275/35R19 vs 285/30R20 (−0.57%)
• 245/40R19 vs 285/30R20 (−0.06%)
• 285/35R19 vs 285/30R20 (+0.46%)
• 225/45R19 vs 285/30R20 (+0.90%)
• 265/30R20 vs 285/30R20 (−1.77%)
• 235/35R20 vs 285/30R20 (−0.96%)
• 275/30R20 vs 285/30R20 (−0.88%)
• 285/30R20 vs 245/35R20 (+0.07%)
• 285/30R20 vs 295/30R20 (+0.88%)
• 285/30R20 vs 255/35R20 (+1.10%)
• 285/30R20 vs 285/35R20 (+4.20%)

Sizes within 3% of 26.73 in diameter

• 225/55R17 26.74 in (+0.04%)
• 245/40R19 26.72 in (−0.06%)
• 245/35R20 26.75 in (+0.07%)
• 215/75R14 26.70 in (−0.13%)
• 245/45R18 26.68 in (−0.19%)
• 275/40R18 26.66 in (−0.27%)
• 245/50R17 26.65 in (−0.32%)
• 225/60R16 26.63 in (−0.38%)
• 215/70R15 26.85 in (+0.44%)
• 285/35R19 26.85 in (+0.46%)
• 225/50R18 26.86 in (+0.47%)
• 275/35R19 26.58 in (−0.57%)
• 225/65R15 26.52 in (−0.81%)
• 275/30R20 26.50 in (−0.88%)
• 295/30R20 26.97 in (+0.88%)
• 225/45R19 26.97 in (+0.90%)
• 205/65R16 26.49 in (−0.90%)
• 285/40R18 26.98 in (+0.91%)
• 235/35R20 26.48 in (−0.96%)
• 27x8.50R14 27.00 in (+1.00%)
• 215/50R18 26.46 in (−1.00%)
• 215/65R16 27.00 in (+1.02%)
• 255/35R20 27.03 in (+1.10%)
• 255/40R19 27.03 in (+1.12%)
• 255/45R18 27.04 in (+1.13%)
• 255/50R17 27.04 in (+1.15%)
• 225/70R14 26.40 in (−1.24%)
• 235/40R19 26.40 in (−1.24%)
• 225/40R20 27.09 in (+1.33%)
• 235/60R16 27.10 in (+1.38%)
• 205/75R15 27.11 in (+1.40%)
• 265/40R18 26.35 in (−1.44%)
• 295/35R19 27.13 in (+1.49%)
• 235/45R18 26.33 in (−1.52%)
• 215/55R17 26.31 in (−1.58%)
• 215/60R17 27.16 in (+1.59%)
• 265/35R19 26.30 in (−1.61%)
• 205/70R15 26.30 in (−1.62%)
• 235/55R17 27.18 in (+1.66%)
• 265/30R20 26.26 in (−1.77%)
• 235/50R17 26.25 in (−1.80%)
• 235/50R18 27.25 in (+1.94%)
• 305/30R19 26.20 in (−1.97%)
• 225/35R20 26.20 in (−1.99%)
• 225/75R14 27.29 in (+2.08%)
• 295/40R18 27.29 in (+2.09%)
• 265/35R20 27.30 in (+2.14%)
• 215/60R16 26.16 in (−2.15%)
• 215/55R18 27.31 in (+2.16%)
• 235/45R19 27.33 in (+2.22%)
• 295/35R18 26.13 in (−2.25%)
• 265/40R19 27.35 in (+2.30%)
• 205/75R14 26.11 in (−2.34%)
• 235/60R15 26.10 in (−2.36%)
• 225/40R19 26.09 in (−2.42%)
• 265/45R18 27.39 in (+2.46%)
• 225/70R15 27.40 in (+2.50%)
• 305/35R19 27.41 in (+2.52%)
• 255/45R17 26.04 in (−2.61%)
• 255/40R18 26.03 in (−2.62%)
• 255/35R19 26.03 in (−2.64%)
• 255/30R20 26.02 in (−2.65%)
• 215/65R15 26.00 in (−2.72%)
• 225/45R18 25.97 in (−2.84%)
• 275/30R21 27.50 in (+2.86%)
• 295/30R19 25.97 in (−2.86%)
• 225/65R16 27.52 in (+2.93%)

Open 285/30R20 in the tire size calculator

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.