275/60R18 tire size

A 275/60R18 tire is 30.99 in (787.2 mm) tall and 10.83 in (275.0 mm) wide, and turns 651 revolutions per mile.

• 30.99 inOverall diameter
• 6.50 inSidewall height
• 651Revolutions per mile
• 31.0x10.8R18Flotation equivalent

275/60R18 is a 18-inch tire with a 275 mm (10.83 in) section width and a 60% aspect ratio, giving a 6.50-inch sidewall and a flotation-style size of about 31.0x10.8R18.

Its overall diameter is 30.99 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 275/60R18 with plausible swaps

• 265/70R16 vs 275/60R18 (−1.24%)
• 31x10.50R16 vs 275/60R18 (+0.03%)
• 265/65R17 vs 275/60R18 (−1.38%)
• 235/75R17 vs 275/60R18 (−0.37%)
• 255/70R17 vs 275/60R18 (+0.20%)
• 275/65R17 vs 275/60R18 (+0.27%)
• 275/55R18 vs 275/60R18 (−3.49%)
• 255/60R18 vs 275/60R18 (−3.05%)
• 265/60R18 vs 275/60R18 (−1.52%)
• 275/60R18 vs 255/65R18 (+0.19%)
• 275/60R18 vs 285/60R18 (+1.52%)
• 275/60R18 vs 275/65R18 (+3.49%)
• 275/60R18 vs 275/55R19 (−0.27%)
• 275/60R18 vs 235/65R19 (+0.11%)
• 275/60R18 vs 255/60R19 (+0.18%)
• 275/60R18 vs 245/55R20 (−1.23%)
• 275/60R18 vs 305/45R20 (−0.60%)
• 275/60R18 vs 275/50R20 (−0.53%)
• 275/60R18 vs 255/55R20 (+0.17%)
• 275/60R18 vs 285/50R20 (+0.74%)

Sizes within 3% of 30.99 in diameter

• 31x10.50R15 31.00 in (+0.03%)
• 31x10.50R16 31.00 in (+0.03%)
• 285/40R22 30.98 in (−0.05%)
• 235/65R19 31.03 in (+0.11%)
• 255/50R21 31.04 in (+0.15%)
• 255/55R20 31.04 in (+0.17%)
• 255/60R19 31.05 in (+0.18%)
• 255/65R18 31.05 in (+0.19%)
• 255/70R17 31.06 in (+0.20%)
• 275/65R17 31.07 in (+0.27%)
• 275/55R19 30.91 in (−0.27%)
• 285/45R21 31.10 in (+0.34%)
• 235/75R17 30.88 in (−0.37%)
• 275/50R20 30.83 in (−0.53%)
• 305/45R20 30.81 in (−0.60%)
• 305/30R24 31.20 in (+0.69%)
• 285/50R20 31.22 in (+0.74%)
• 275/45R21 30.74 in (−0.80%)
• 285/30R24 30.73 in (−0.84%)
• 295/40R22 31.29 in (+0.97%)
• 275/40R22 30.66 in (−1.07%)
• 265/75R15 30.65 in (−1.11%)
• 245/55R20 30.61 in (−1.23%)
• 265/70R16 30.61 in (−1.24%)
• 265/45R22 31.39 in (+1.28%)
• 265/65R17 30.56 in (−1.38%)
• 265/50R21 31.43 in (+1.42%)
• 245/65R18 30.54 in (−1.46%)
• 265/60R18 30.52 in (−1.52%)
• 285/60R18 31.46 in (+1.52%)
• 245/75R17 31.47 in (+1.54%)
• 265/55R20 31.48 in (+1.56%)
• 245/70R17 30.50 in (−1.58%)
• 265/55R19 30.48 in (−1.66%)
• 245/75R16 30.47 in (−1.69%)
• 295/45R20 30.45 in (−1.74%)
• 265/50R20 30.43 in (−1.80%)
• 265/65R18 31.56 in (+1.84%)
• 305/35R22 30.41 in (−1.89%)
• 285/65R17 31.59 in (+1.92%)
• 215/85R16 30.39 in (−1.94%)
• 265/45R21 30.39 in (−1.94%)
• 265/70R17 31.61 in (+1.98%)
• 305/40R22 31.61 in (+1.98%)
• 265/40R22 30.35 in (−2.08%)
• 265/75R16 31.65 in (+2.12%)
• 295/40R21 30.29 in (−2.26%)
• 225/75R17 30.29 in (−2.27%)
• 235/85R16 31.73 in (+2.38%)
• 275/45R22 31.74 in (+2.43%)
• 235/80R17 31.80 in (+2.62%)
• 235/55R20 30.18 in (−2.63%)
• 275/50R21 31.83 in (+2.69%)
• 235/60R19 30.10 in (−2.87%)
• 285/45R20 30.10 in (−2.88%)
• 275/55R20 31.91 in (+2.96%)

Open 275/60R18 in the tire size calculator

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