How it works

TireFlows

Get diameter, speedometer impact, and alternate sizes — free, no signup.

Try
/R

Result

Diameter

32.71"

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

305/65R17-0.3%275/70R17-1.69%295/70R17+1.69%295/65R17-1.87%
Width 11.22 ″Rim 17 ″Dia. 32.71 ″7.85 ″Revs/Mile 616.6Circum. 102.8″
Diameter32.71"
Width11.22"
Sidewall7.85"
Circum.102.757"
Revs/Mile616.6

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