How it works

TireFlows

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Result

Diameter

31.29"

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

285/40R22-1.01%305/40R22+1.01%275/45R22+1.45%275/40R22-2.01%315/40R22+2.01%285/45R22+2.58%
Width 11.61 ″Rim 22 ″Dia. 31.29 ″4.65 ″Revs/Mile 644.5Circum. 98.3″
Diameter31.29"
Width11.61"
Sidewall4.65"
Circum.98.305"
Revs/Mile644.5

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