TireSizesFinder

265/75R15 vs 265/65R17

265/65R17 is 0.09 in (2.2 mm) shorter than 265/75R15, a −0.28% diameter difference. With the speedometer set for 265/75R15, an indicated 60 mph is 59.8 mph on 265/65R17.

Is this a safe swap?

Diameter difference −0.28%: under 1%

By overall diameter alone, 265/65R17 is a near match for 265/75R15; 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: 265/75R15 (30.65 in) vs 265/65R17 (30.56 in)265/75R1530.65 in × 10.43 in265/65R1730.56 in × 10.43 in
Side profile and tread width, drawn to the same scale.
265/75R15 vs 265/65R17 differences
Measurement265/75R15265/65R17Difference% diff
Overall diameter30.65 in (778.5 mm)30.56 in (776.3 mm)−0.09 in (−2.2 mm)−0.28%
Sidewall height7.82 in (198.8 mm)6.78 in (172.3 mm)−1.04 in (−26.5 mm)−13.33%
Section width10.43 in (265.0 mm)10.43 in (265.0 mm)0.00 in (0.0 mm)0.00%
Circumference96.29 in (2,445.7 mm)96.02 in (2,438.8 mm)−0.27 in (−6.9 mm)−0.28%
Revolutions per mile658660+2+0.28%
True speed with the speedometer calibrated for 265/75R15
IndicatedActual on 265/75R15Actual on 265/65R17Difference
30 mph30.0 mph29.9 mph−0.1 mph
60 mph60.0 mph59.8 mph−0.2 mph
75 mph75.0 mph74.8 mph−0.2 mph

Ride-height change: 265/65R17 lowers the vehicle by 0.04 in (1.1 mm) at the axle (half the −2.2 mm diameter difference).

265/65R17 is 0.09 in shorter than 265/75R15 and the same width, a 0.28% difference in overall diameter.

With the speedometer calibrated for 265/75R15, an indicated 60 mph is actually 59.8 mph on 265/65R17, and revolutions per mile change from 658 to 660.

265/65R17 mounts on a 17-inch wheel, a plus-2 fitment from the 15-inch wheel of 265/75R15.

Size pages

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