265/75R16 vs 275/70R17

275/70R17 is 0.51 in (12.9 mm) taller than 265/75R16, a +1.60% diameter difference. With the speedometer set for 265/75R16, an indicated 60 mph is 61.0 mph on 275/70R17.

Is this a safe swap?

Diameter difference +1.60%: within the ±3% guideline

By overall diameter alone, 275/70R17 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 275/70R17 differences
Measurement	265/75R16	275/70R17	Difference	% diff
Overall diameter	31.65 in (803.9 mm)	32.16 in (816.8 mm)	+0.51 in (+12.9 mm)	+1.60%
Sidewall height	7.82 in (198.8 mm)	7.58 in (192.5 mm)	−0.25 in (−6.2 mm)	−3.14%
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)	101.03 in (2,566.1 mm)	+1.60 in (+40.5 mm)	+1.60%
Revolutions per mile	637	627	−10	−1.58%

True speed with the speedometer calibrated for 265/75R16
Indicated	Actual on 265/75R16	Actual on 275/70R17	Difference
30 mph	30.0 mph	30.5 mph	+0.5 mph
60 mph	60.0 mph	61.0 mph	+1.0 mph
75 mph	75.0 mph	76.2 mph	+1.2 mph

Ride-height change: 275/70R17 raises the vehicle by 0.25 in (6.4 mm) at the axle (half the +12.9 mm diameter difference).

275/70R17 is 0.51 in taller than 265/75R16 and 10 mm wider, a 1.60% difference in overall diameter.

With the speedometer calibrated for 265/75R16, an indicated 60 mph is actually 61.0 mph on 275/70R17, and revolutions per mile change from 637 to 627.

275/70R17 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 275/70R17

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