How it works

TireFlows

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Result

Diameter

24.21"

Calculated from size marking (math only) — not a fitment guarantee. How it works

Alternate Tire Sizes

Closest diameters (math only · same rim · within 3%)

Tap a size to compare it with your current size

215/55R15+0.41%175/65R15-1.06%185/65R15+1.06%205/55R15-1.38%175/70R15+1.79%185/60R15-1.95%205/60R15+1.95%
Width 7.68 ″Rim 15 ″Dia. 24.21 ″4.61 ″Revs/Mile 833.0Circum. 76.1″
Diameter24.21"
Width7.68"
Sidewall4.61"
Circum.76.066"
Revs/Mile833

How results are calculated

Tire dimensions are calculated from the metric size format (width / aspect ratio / rim diameter). Diameter, circumference, and revolutions per mile are derived mathematically — no fitment or vehicle data is used.

The 3% rule is a general reference for acceptable diameter difference, not a guarantee. Always check your vehicle manual or consult a tire professional.

How it works