265/75R16 vs 275/65R17

275/65R17 is 0.57 in (14.6 mm) shorter than 265/75R16, a −1.82% diameter difference. With the speedometer set for 265/75R16, an indicated 60 mph is 58.9 mph on 275/65R17.

Is this a safe swap?

Diameter difference −1.82%: within the ±3% guideline

By overall diameter alone, 275/65R17 falls inside the ±3% range commonly used as a guideline when replacing 265/75R16. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

Side profile and tread width, drawn to the same scale.

265/75R16 vs 275/65R17 differences
Measurement	265/75R16	275/65R17	Difference	% diff
Overall diameter	31.65 in (803.9 mm)	31.07 in (789.3 mm)	−0.57 in (−14.6 mm)	−1.82%
Sidewall height	7.82 in (198.8 mm)	7.04 in (178.8 mm)	−0.79 in (−20.0 mm)	−10.06%
Section width	10.43 in (265.0 mm)	10.83 in (275.0 mm)	+0.39 in (+10.0 mm)	+3.77%
Circumference	99.43 in (2,525.5 mm)	97.62 in (2,479.7 mm)	−1.81 in (−45.9 mm)	−1.82%
Revolutions per mile	637	649	+12	+1.85%

True speed with the speedometer calibrated for 265/75R16
Indicated	Actual on 265/75R16	Actual on 275/65R17	Difference
30 mph	30.0 mph	29.5 mph	−0.5 mph
60 mph	60.0 mph	58.9 mph	−1.1 mph
75 mph	75.0 mph	73.6 mph	−1.4 mph

Ride-height change: 275/65R17 lowers the vehicle by 0.29 in (7.3 mm) at the axle (half the −14.6 mm diameter difference).

275/65R17 is 0.57 in shorter than 265/75R16 and 10 mm wider, a 1.82% difference in overall diameter.

With the speedometer calibrated for 265/75R16, an indicated 60 mph is actually 58.9 mph on 275/65R17, and revolutions per mile change from 637 to 649.

275/65R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 265/75R16.

Size pages

Other comparisons with 265/75R16

Other comparisons with 275/65R17

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.