225/75R14 vs 215/70R16

215/70R16 is 0.56 in (14.3 mm) taller than 225/75R14, a +2.06% diameter difference. With the speedometer set for 225/75R14, an indicated 60 mph is 61.2 mph on 215/70R16.

Is this a safe swap?

Diameter difference +2.06%: within the ±3% guideline

By overall diameter alone, 215/70R16 falls inside the ±3% range commonly used as a guideline when replacing 225/75R14. 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.

225/75R14 vs 215/70R16 differences
Measurement	225/75R14	215/70R16	Difference	% diff
Overall diameter	27.29 in (693.1 mm)	27.85 in (707.4 mm)	+0.56 in (+14.3 mm)	+2.06%
Sidewall height	6.64 in (168.8 mm)	5.93 in (150.5 mm)	−0.72 in (−18.2 mm)	−10.81%
Section width	8.86 in (225.0 mm)	8.46 in (215.0 mm)	−0.39 in (−10.0 mm)	−4.44%
Circumference	85.73 in (2,177.4 mm)	87.49 in (2,222.4 mm)	+1.77 in (+44.9 mm)	+2.06%
Revolutions per mile	739	724	−15	−2.02%

True speed with the speedometer calibrated for 225/75R14
Indicated	Actual on 225/75R14	Actual on 215/70R16	Difference
30 mph	30.0 mph	30.6 mph	+0.6 mph
60 mph	60.0 mph	61.2 mph	+1.2 mph
75 mph	75.0 mph	76.5 mph	+1.5 mph

Ride-height change: 215/70R16 raises the vehicle by 0.28 in (7.2 mm) at the axle (half the +14.3 mm diameter difference).

215/70R16 is 0.56 in taller than 225/75R14 and 10 mm narrower, a 2.06% difference in overall diameter.

With the speedometer calibrated for 225/75R14, an indicated 60 mph is actually 61.2 mph on 215/70R16, and revolutions per mile change from 739 to 724.

215/70R16 mounts on a 16-inch wheel, a plus-2 fitment from the 14-inch wheel of 225/75R14.

Size pages

Other comparisons with 225/75R14

Other comparisons with 215/70R16

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