215/70R15 vs 225/60R16

225/60R16 is 0.22 in (5.6 mm) shorter than 215/70R15, a −0.82% diameter difference. With the speedometer set for 215/70R15, an indicated 60 mph is 59.5 mph on 225/60R16.

Is this a safe swap?

Diameter difference −0.82%: under 1%

By overall diameter alone, 225/60R16 is a near match for 215/70R15; 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.

215/70R15 vs 225/60R16 differences
Measurement	215/70R15	225/60R16	Difference	% diff
Overall diameter	26.85 in (682.0 mm)	26.63 in (676.4 mm)	−0.22 in (−5.6 mm)	−0.82%
Sidewall height	5.93 in (150.5 mm)	5.31 in (135.0 mm)	−0.61 in (−15.5 mm)	−10.30%
Section width	8.46 in (215.0 mm)	8.86 in (225.0 mm)	+0.39 in (+10.0 mm)	+4.65%
Circumference	84.35 in (2,142.6 mm)	83.66 in (2,125.0 mm)	−0.69 in (−17.6 mm)	−0.82%
Revolutions per mile	751	757	+6	+0.83%

True speed with the speedometer calibrated for 215/70R15
Indicated	Actual on 215/70R15	Actual on 225/60R16	Difference
30 mph	30.0 mph	29.8 mph	−0.2 mph
60 mph	60.0 mph	59.5 mph	−0.5 mph
75 mph	75.0 mph	74.4 mph	−0.6 mph

Ride-height change: 225/60R16 lowers the vehicle by 0.11 in (2.8 mm) at the axle (half the −5.6 mm diameter difference).

225/60R16 is 0.22 in shorter than 215/70R15 and 10 mm wider, a 0.82% difference in overall diameter.

With the speedometer calibrated for 215/70R15, an indicated 60 mph is actually 59.5 mph on 225/60R16, and revolutions per mile change from 751 to 757.

225/60R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 215/70R15.

Size pages

Other comparisons with 215/70R15

Other comparisons with 225/60R16

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