275/40R20 tire size

A 275/40R20 tire is 28.66 in (728.0 mm) tall and 10.83 in (275.0 mm) wide, and turns 704 revolutions per mile.

• 28.66 inOverall diameter
• 4.33 inSidewall height
• 704Revolutions per mile
• 28.7x10.8R20Flotation equivalent

275/40R20 is a 20-inch tire with a 275 mm (10.83 in) section width and a 40% aspect ratio, giving a 4.33-inch sidewall and a flotation-style size of about 28.7x10.8R20.

Its overall diameter is 28.66 inches, so it rolls 90.0 inches per revolution and turns about 704 times per mile.

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

Compare 275/40R20 with plausible swaps

• 265/50R18 vs 275/40R20 (−0.80%)
• 245/55R18 vs 275/40R20 (−0.18%)
• 225/60R18 vs 275/40R20 (−0.11%)
• 245/50R19 vs 275/40R20 (−0.05%)
• 225/55R19 vs 275/40R20 (+0.29%)
• 275/45R19 vs 275/40R20 (+0.29%)
• 275/35R20 vs 275/40R20 (−3.78%)
• 255/40R20 vs 275/40R20 (−2.20%)
• 265/40R20 vs 275/40R20 (−1.10%)
• 275/40R20 vs 245/45R20 (+0.07%)
• 275/40R20 vs 315/35R20 (+0.07%)
• 275/40R20 vs 285/40R20 (+1.10%)
• 275/40R20 vs 295/40R20 (+2.20%)
• 275/40R20 vs 275/45R20 (+3.78%)
• 275/40R20 vs 275/35R21 (−0.29%)
• 275/40R20 vs 325/30R21 (+0.05%)
• 275/40R20 vs 245/40R21 (+0.19%)
• 275/40R20 vs 285/35R21 (+0.67%)
• 275/40R20 vs 265/30R22 (−1.40%)
• 275/40R20 vs 275/30R22 (−0.58%)
• 275/40R20 vs 285/30R22 (+0.25%)
• 275/40R20 vs 245/35R22 (+0.32%)
• 275/40R20 vs 295/30R22 (+1.07%)

Sizes within 3% of 28.66 in diameter

• 325/30R21 28.68 in (+0.05%)
• 245/50R19 28.65 in (−0.05%)
• 245/45R20 28.68 in (+0.07%)
• 315/35R20 28.68 in (+0.07%)
• 225/60R18 28.63 in (−0.11%)
• 215/75R16 28.70 in (+0.12%)
• 245/55R18 28.61 in (−0.18%)
• 245/40R21 28.72 in (+0.19%)
• 285/30R22 28.73 in (+0.25%)
• 225/55R19 28.74 in (+0.29%)
• 275/45R19 28.74 in (+0.29%)
• 275/35R21 28.58 in (−0.29%)
• 245/60R17 28.57 in (−0.30%)
• 245/35R22 28.75 in (+0.32%)
• 245/65R16 28.54 in (−0.43%)
• 225/65R17 28.52 in (−0.51%)
• 275/30R22 28.50 in (−0.58%)
• 285/35R21 28.85 in (+0.67%)
• 235/75R15 28.88 in (+0.76%)
• 265/50R18 28.43 in (−0.80%)
• 225/70R16 28.40 in (−0.91%)
• 265/45R19 28.39 in (−0.95%)
• 235/70R16 28.95 in (+1.02%)
• 295/30R22 28.97 in (+1.07%)
• 265/40R20 28.35 in (−1.10%)
• 285/40R20 28.98 in (+1.10%)
• 235/45R20 28.33 in (−1.17%)
• 265/35R21 28.30 in (−1.25%)
• 235/65R17 29.03 in (+1.28%)
• 255/35R22 29.03 in (+1.28%)
• 255/40R21 29.03 in (+1.29%)
• 295/40R19 28.29 in (−1.29%)
• 225/75R15 28.29 in (−1.30%)
• 255/45R20 29.04 in (+1.30%)
• 255/50R19 29.04 in (+1.32%)
• 255/55R18 29.04 in (+1.33%)
• 255/60R17 29.05 in (+1.35%)
• 255/65R16 29.05 in (+1.36%)
• 255/70R15 29.06 in (+1.37%)
• 265/30R22 28.26 in (−1.40%)
• 235/50R19 28.25 in (−1.43%)
• 285/45R19 29.10 in (+1.52%)
• 235/60R18 29.10 in (+1.54%)
• 305/30R21 28.20 in (−1.59%)
• 295/35R21 29.13 in (+1.63%)
• 235/55R18 28.18 in (−1.69%)
• 235/55R19 29.18 in (+1.80%)
• 295/35R20 28.13 in (−1.85%)
• 205/75R16 28.11 in (−1.94%)
• 235/60R17 28.10 in (−1.95%)
• 285/45R18 28.10 in (−1.96%)
• 255/50R18 28.04 in (−2.17%)
• 225/75R16 29.29 in (+2.18%)
• 255/45R19 28.04 in (−2.18%)
• 255/40R20 28.03 in (−2.20%)
• 295/40R20 29.29 in (+2.20%)
• 235/65R16 28.03 in (−2.21%)
• 255/35R21 28.03 in (−2.21%)
• 255/30R22 28.02 in (−2.23%)
• 265/35R22 29.30 in (+2.24%)
• 215/65R17 28.00 in (−2.29%)
• 235/45R21 29.33 in (+2.32%)
• 265/40R21 29.35 in (+2.39%)
• 285/40R19 27.98 in (−2.39%)
• 295/30R21 27.97 in (−2.42%)
• 235/70R15 27.95 in (−2.47%)
• 265/45R20 29.39 in (+2.54%)
• 275/25R24 29.41 in (+2.62%)
• 265/50R19 29.43 in (+2.69%)
• 315/30R22 29.44 in (+2.72%)
• 225/50R19 27.86 in (−2.80%)
• 245/75R15 29.47 in (+2.82%)
• 285/35R20 27.85 in (−2.82%)
• 215/70R16 27.85 in (−2.83%)
• 245/70R16 29.50 in (+2.94%)
• 295/25R22 27.81 in (−2.98%)
• 265/60R17 29.52 in (+2.99%)

Open 275/40R20 in the tire size calculator

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