How it works

TireFlows

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Result

Diameter

31.04"

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

235/60R20+0.19%275/50R20-0.7%245/55R20-1.4%265/55R20+1.4%245/60R20+1.71%265/50R20-1.97%235/55R20-2.79%275/55R20+2.79%
Width 10.04 ″Rim 20 ″Dia. 31.04 ″5.52 ″Revs/Mile 649.7Circum. 97.5″
Diameter31.04"
Width10.04"
Sidewall5.52"
Circum.97.525"
Revs/Mile649.7

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