265/70R16 vs 275/65R17

275/65R17 is 0.47 in (11.9 mm) taller than 265/70R16, a +1.53% diameter difference. With the speedometer set for 265/70R16, an indicated 60 mph is 60.9 mph on 275/65R17.

Is this a safe swap?

Diameter difference +1.53%: within the ±3% guideline

By overall diameter alone, 275/65R17 falls inside the ±3% range commonly used as a guideline when replacing 265/70R16. 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.

265/70R16 vs 275/65R17 differences
Measurement	265/70R16	275/65R17	Difference	% diff
Overall diameter	30.61 in (777.4 mm)	31.07 in (789.3 mm)	+0.47 in (+11.9 mm)	+1.53%
Sidewall height	7.30 in (185.5 mm)	7.04 in (178.8 mm)	−0.27 in (−6.7 mm)	−3.64%
Section width	10.43 in (265.0 mm)	10.83 in (275.0 mm)	+0.39 in (+10.0 mm)	+3.77%
Circumference	96.15 in (2,442.3 mm)	97.62 in (2,479.7 mm)	+1.47 in (+37.4 mm)	+1.53%
Revolutions per mile	659	649	−10	−1.51%

True speed with the speedometer calibrated for 265/70R16
Indicated	Actual on 265/70R16	Actual on 275/65R17	Difference
30 mph	30.0 mph	30.5 mph	+0.5 mph
60 mph	60.0 mph	60.9 mph	+0.9 mph
75 mph	75.0 mph	76.1 mph	+1.1 mph

Ride-height change: 275/65R17 raises the vehicle by 0.23 in (5.9 mm) at the axle (half the +11.9 mm diameter difference).

275/65R17 is 0.47 in taller than 265/70R16 and 10 mm wider, a 1.53% difference in overall diameter.

With the speedometer calibrated for 265/70R16, an indicated 60 mph is actually 60.9 mph on 275/65R17, and revolutions per mile change from 659 to 649.

275/65R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 265/70R16.

Size pages

Other comparisons with 265/70R16

Other comparisons with 275/65R17

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