31x10.50R15 tire size

A 31x10.50R15 tire is 31.00 in (787.4 mm) tall and 10.50 in (266.7 mm) wide, and turns 651 revolutions per mile.

• 31.00 inOverall diameter
• 8.00 inSidewall height
• 651Revolutions per mile
• 267/76R15Metric equivalent

31x10.50R15 is a flotation size: 31.0 inches tall and 10.50 inches wide on a 15-inch wheel, which works out to roughly 267/76R15 in metric terms.

Its overall diameter is 31.00 inches, so it rolls 97.4 inches per revolution and turns about 651 times per mile.

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

Compare 31x10.50R15 with plausible swaps

• 265/70R15 vs 31x10.50R15 (−4.50%)
• 265/75R15 vs 31x10.50R15 (−1.13%)
• 31x10.50R15 vs 215/85R16 (−1.97%)
• 31x10.50R15 vs 245/75R16 (−1.71%)
• 31x10.50R15 vs 265/70R16 (−1.27%)
• 31x10.50R15 vs 31x10.50R16 (0.00%)
• 31x10.50R15 vs 265/75R16 (+2.10%)
• 31x10.50R15 vs 245/70R17 (−1.60%)
• 31x10.50R15 vs 265/65R17 (−1.41%)
• 31x10.50R15 vs 235/75R17 (−0.39%)
• 31x10.50R15 vs 255/70R17 (+0.18%)
• 31x10.50R15 vs 275/65R17 (+0.24%)
• 31x10.50R15 vs 245/75R17 (+1.51%)
• 31x10.50R15 vs 285/65R17 (+1.89%)
• 31x10.50R15 vs 265/70R17 (+1.96%)

Sizes within 3% of 31.00 in diameter

• 31x10.50R16 31.00 in (0.00%)
• 275/60R18 30.99 in (−0.03%)
• 285/40R22 30.98 in (−0.08%)
• 235/65R19 31.03 in (+0.09%)
• 255/50R21 31.04 in (+0.13%)
• 255/55R20 31.04 in (+0.14%)
• 255/60R19 31.05 in (+0.15%)
• 255/65R18 31.05 in (+0.17%)
• 255/70R17 31.06 in (+0.18%)
• 275/65R17 31.07 in (+0.24%)
• 275/55R19 30.91 in (−0.29%)
• 285/45R21 31.10 in (+0.32%)
• 235/75R17 30.88 in (−0.39%)
• 275/50R20 30.83 in (−0.56%)
• 305/45R20 30.81 in (−0.62%)
• 305/30R24 31.20 in (+0.66%)
• 285/50R20 31.22 in (+0.71%)
• 275/45R21 30.74 in (−0.83%)
• 285/30R24 30.73 in (−0.86%)
• 295/40R22 31.29 in (+0.94%)
• 275/40R22 30.66 in (−1.09%)
• 265/75R15 30.65 in (−1.13%)
• 245/55R20 30.61 in (−1.26%)
• 265/45R22 31.39 in (+1.26%)
• 265/70R16 30.61 in (−1.27%)
• 265/50R21 31.43 in (+1.40%)
• 265/65R17 30.56 in (−1.41%)
• 245/65R18 30.54 in (−1.49%)
• 285/60R18 31.46 in (+1.50%)
• 245/75R17 31.47 in (+1.51%)
• 265/55R20 31.48 in (+1.54%)
• 265/60R18 30.52 in (−1.55%)
• 245/70R17 30.50 in (−1.60%)
• 265/55R19 30.48 in (−1.69%)
• 245/75R16 30.47 in (−1.71%)
• 295/45R20 30.45 in (−1.77%)
• 265/65R18 31.56 in (+1.82%)
• 265/50R20 30.43 in (−1.83%)
• 285/65R17 31.59 in (+1.89%)
• 305/35R22 30.41 in (−1.92%)
• 265/70R17 31.61 in (+1.96%)
• 305/40R22 31.61 in (+1.96%)
• 215/85R16 30.39 in (−1.97%)
• 265/45R21 30.39 in (−1.97%)
• 265/75R16 31.65 in (+2.10%)
• 265/40R22 30.35 in (−2.11%)
• 295/40R21 30.29 in (−2.29%)
• 225/75R17 30.29 in (−2.30%)
• 235/85R16 31.73 in (+2.35%)
• 275/45R22 31.74 in (+2.40%)
• 235/80R17 31.80 in (+2.59%)
• 235/55R20 30.18 in (−2.65%)
• 275/50R21 31.83 in (+2.67%)
• 235/60R19 30.10 in (−2.90%)
• 285/45R20 30.10 in (−2.91%)
• 275/55R20 31.91 in (+2.93%)

Open 31x10.50R15 in the tire size calculator

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