TireSizesFinder

265/75R16 vs 265/70R17

265/70R17 is 0.04 in (1.1 mm) shorter than 265/75R16, a −0.14% diameter difference. With the speedometer set for 265/75R16, an indicated 60 mph is 59.9 mph on 265/70R17.

Is this a safe swap?

Diameter difference −0.14%: under 1%

By overall diameter alone, 265/70R17 is a near match for 265/75R16; 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: 265/75R16 (31.65 in) vs 265/70R17 (31.61 in)265/75R1631.65 in × 10.43 in265/70R1731.61 in × 10.43 in
Side profile and tread width, drawn to the same scale.
265/75R16 vs 265/70R17 differences
Measurement265/75R16265/70R17Difference% diff
Overall diameter31.65 in (803.9 mm)31.61 in (802.8 mm)−0.04 in (−1.1 mm)−0.14%
Sidewall height7.82 in (198.8 mm)7.30 in (185.5 mm)−0.52 in (−13.2 mm)−6.67%
Section width10.43 in (265.0 mm)10.43 in (265.0 mm)0.00 in (0.0 mm)0.00%
Circumference99.43 in (2,525.5 mm)99.29 in (2,522.1 mm)−0.14 in (−3.5 mm)−0.14%
Revolutions per mile637638+1+0.14%
True speed with the speedometer calibrated for 265/75R16
IndicatedActual on 265/75R16Actual on 265/70R17Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph59.9 mph−0.1 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 265/70R17 lowers the vehicle by 0.02 in (0.6 mm) at the axle (half the −1.1 mm diameter difference).

265/70R17 is 0.04 in shorter than 265/75R16 and the same width, a 0.14% difference in overall diameter.

With the speedometer calibrated for 265/75R16, an indicated 60 mph is actually 59.9 mph on 265/70R17, and revolutions per mile change from 637 to 638.

265/70R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 265/75R16.

Size pages

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