245/65R16 vs 215/75R16

215/75R16 is 0.16 in (4.0 mm) taller than 245/65R16, a +0.55% diameter difference. With the speedometer set for 245/65R16, an indicated 60 mph is 60.3 mph on 215/75R16.

Is this a safe swap?

Diameter difference +0.55%: under 1%

By overall diameter alone, 215/75R16 is a near match for 245/65R16; the speedometer changes by less than 1%. 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.

245/65R16 vs 215/75R16 differences
Measurement	245/65R16	215/75R16	Difference	% diff
Overall diameter	28.54 in (724.9 mm)	28.70 in (728.9 mm)	+0.16 in (+4.0 mm)	+0.55%
Sidewall height	6.27 in (159.3 mm)	6.35 in (161.3 mm)	+0.08 in (+2.0 mm)	+1.26%
Section width	9.65 in (245.0 mm)	8.46 in (215.0 mm)	−1.18 in (−30.0 mm)	−12.24%
Circumference	89.66 in (2,277.3 mm)	90.15 in (2,289.9 mm)	+0.49 in (+12.6 mm)	+0.55%
Revolutions per mile	707	703	−4	−0.55%

True speed with the speedometer calibrated for 245/65R16
Indicated	Actual on 245/65R16	Actual on 215/75R16	Difference
30 mph	30.0 mph	30.2 mph	+0.2 mph
60 mph	60.0 mph	60.3 mph	+0.3 mph
75 mph	75.0 mph	75.4 mph	+0.4 mph

Ride-height change: 215/75R16 raises the vehicle by 0.08 in (2.0 mm) at the axle (half the +4.0 mm diameter difference).

215/75R16 is 0.16 in taller than 245/65R16 and 30 mm narrower, a 0.55% difference in overall diameter.

With the speedometer calibrated for 245/65R16, an indicated 60 mph is actually 60.3 mph on 215/75R16, and revolutions per mile change from 707 to 703.

Both sizes mount on 16-inch wheels.

Size pages

Other comparisons with 245/65R16

Other comparisons with 215/75R16

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