175/55R15 tire size

A 175/55R15 tire is 22.58 in (573.5 mm) tall and 6.89 in (175.0 mm) wide, and turns 893 revolutions per mile.

• 22.58 inOverall diameter
• 3.79 inSidewall height
• 893Revolutions per mile
• 22.6x6.9R15Flotation equivalent

175/55R15 is a 15-inch tire with a 175 mm (6.89 in) section width and a 55% aspect ratio, giving a 3.79-inch sidewall and a flotation-style size of about 22.6x6.9R15.

Its overall diameter is 22.58 inches, so it rolls 70.9 inches per revolution and turns about 893 times per mile.

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

Compare 175/55R15 with plausible swaps

• 155/70R13 vs 175/55R15 (−4.59%)
• 185/60R13 vs 175/55R15 (−3.71%)
• 165/70R13 vs 175/55R15 (−2.14%)
• 145/80R13 vs 175/55R15 (−1.97%)
• 175/70R13 vs 175/55R15 (+0.30%)
• 155/80R13 vs 175/55R15 (+0.82%)
• 185/70R13 vs 175/55R15 (+2.74%)
• 165/60R14 vs 175/55R15 (−3.47%)
• 165/65R14 vs 175/55R15 (−0.59%)
• 185/60R14 vs 175/55R15 (+0.71%)
• 175/65R14 vs 175/55R15 (+1.67%)
• 165/70R14 vs 175/55R15 (+2.28%)
• 175/55R15 vs 195/50R15 (+0.44%)
• 175/55R15 vs 185/55R15 (+1.92%)
• 175/55R15 vs 205/50R15 (+2.18%)
• 175/55R15 vs 175/60R15 (+3.05%)
• 175/55R15 vs 195/55R15 (+3.84%)
• 175/55R15 vs 195/45R16 (+1.46%)
• 175/55R15 vs 225/40R16 (+2.25%)

Sizes within 3% of 22.58 in diameter

• 175/70R13 22.65 in (+0.30%)
• 195/50R15 22.68 in (+0.44%)
• 165/65R14 22.44 in (−0.59%)
• 185/60R14 22.74 in (+0.71%)
• 155/80R13 22.76 in (+0.82%)
• 195/45R16 22.91 in (+1.46%)
• 175/65R14 22.96 in (+1.67%)
• 185/55R15 23.01 in (+1.92%)
• 145/80R13 22.13 in (−1.97%)
• 165/70R13 22.09 in (−2.14%)
• 205/50R15 23.07 in (+2.18%)
• 225/40R16 23.09 in (+2.25%)
• 165/70R14 23.09 in (+2.28%)
• 185/70R13 23.20 in (+2.74%)
• 195/60R14 23.21 in (+2.81%)

Open 175/55R15 in the tire size calculator

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