How it works

TireFlows

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Result

Diameter

28.39"

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

245/50R19+0.9%255/45R19-1.25%275/45R19+1.25%285/40R19-1.46%255/50R19+2.29%245/45R19-2.5%285/45R19+2.5%275/40R19-2.57%
Width 10.43 ″Rim 19 ″Dia. 28.39 ″4.69 ″Revs/Mile 710.4Circum. 89.2″
Diameter28.39"
Width10.43"
Sidewall4.69"
Circum.89.189"
Revs/Mile710.4

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