TireSizesFinder

265/75R15 vs 245/75R16

245/75R16 is 0.18 in (4.6 mm) shorter than 265/75R15, a −0.59% diameter difference. With the speedometer set for 265/75R15, an indicated 60 mph is 59.6 mph on 245/75R16.

Is this a safe swap?

Diameter difference −0.59%: under 1%

By overall diameter alone, 245/75R16 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 245/75R16 (30.47 in)265/75R1530.65 in × 10.43 in245/75R1630.47 in × 9.65 in
Side profile and tread width, drawn to the same scale.
265/75R15 vs 245/75R16 differences
Measurement265/75R15245/75R16Difference% diff
Overall diameter30.65 in (778.5 mm)30.47 in (773.9 mm)−0.18 in (−4.6 mm)−0.59%
Sidewall height7.82 in (198.8 mm)7.23 in (183.8 mm)−0.59 in (−15.0 mm)−7.55%
Section width10.43 in (265.0 mm)9.65 in (245.0 mm)−0.79 in (−20.0 mm)−7.55%
Circumference96.29 in (2,445.7 mm)95.72 in (2,431.3 mm)−0.57 in (−14.5 mm)−0.59%
Revolutions per mile658662+4+0.59%
True speed with the speedometer calibrated for 265/75R15
IndicatedActual on 265/75R15Actual on 245/75R16Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.6 mph−0.4 mph
75 mph75.0 mph74.6 mph−0.4 mph

Ride-height change: 245/75R16 lowers the vehicle by 0.09 in (2.3 mm) at the axle (half the −4.6 mm diameter difference).

245/75R16 is 0.18 in shorter than 265/75R15 and 20 mm narrower, a 0.59% difference in overall diameter.

With the speedometer calibrated for 265/75R15, an indicated 60 mph is actually 59.6 mph on 245/75R16, and revolutions per mile change from 658 to 662.

245/75R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 265/75R15.

Size pages

Other comparisons with 265/75R15

Other comparisons with 245/75R16

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