TireSizesFinder

225/75R17 vs 265/65R17

265/65R17 is 0.28 in (7.0 mm) taller than 225/75R17, a +0.91% diameter difference. With the speedometer set for 225/75R17, an indicated 60 mph is 60.5 mph on 265/65R17.

Is this a safe swap?

Diameter difference +0.91%: under 1%

By overall diameter alone, 265/65R17 is a near match for 225/75R17; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 225/75R17 (30.29 in) vs 265/65R17 (30.56 in)225/75R1730.29 in × 8.86 in265/65R1730.56 in × 10.43 in
Side profile and tread width, drawn to the same scale.
225/75R17 vs 265/65R17 differences
Measurement225/75R17265/65R17Difference% diff
Overall diameter30.29 in (769.3 mm)30.56 in (776.3 mm)+0.28 in (+7.0 mm)+0.91%
Sidewall height6.64 in (168.8 mm)6.78 in (172.3 mm)+0.14 in (+3.5 mm)+2.07%
Section width8.86 in (225.0 mm)10.43 in (265.0 mm)+1.57 in (+40.0 mm)+17.78%
Circumference95.15 in (2,416.8 mm)96.02 in (2,438.8 mm)+0.87 in (+22.0 mm)+0.91%
Revolutions per mile666660−6−0.90%
True speed with the speedometer calibrated for 225/75R17
IndicatedActual on 225/75R17Actual on 265/65R17Difference
30 mph30.0 mph30.3 mph+0.3 mph
60 mph60.0 mph60.5 mph+0.5 mph
75 mph75.0 mph75.7 mph+0.7 mph

Ride-height change: 265/65R17 raises the vehicle by 0.14 in (3.5 mm) at the axle (half the +7.0 mm diameter difference).

265/65R17 is 0.28 in taller than 225/75R17 and 40 mm wider, a 0.91% difference in overall diameter.

With the speedometer calibrated for 225/75R17, an indicated 60 mph is actually 60.5 mph on 265/65R17, and revolutions per mile change from 666 to 660.

Both sizes mount on 17-inch wheels.

Size pages

Other comparisons with 225/75R17

Other comparisons with 265/65R17

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.