215/75R14 vs 235/60R15

235/60R15 is 0.59 in (15.1 mm) shorter than 215/75R14, a −2.23% diameter difference. With the speedometer set for 215/75R14, an indicated 60 mph is 58.7 mph on 235/60R15.

Is this a safe swap?

Diameter difference −2.23%: within the ±3% guideline

By overall diameter alone, 235/60R15 falls inside the ±3% range commonly used as a guideline when replacing 215/75R14. 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.

215/75R14 vs 235/60R15 differences
Measurement	215/75R14	235/60R15	Difference	% diff
Overall diameter	26.70 in (678.1 mm)	26.10 in (663.0 mm)	−0.59 in (−15.1 mm)	−2.23%
Sidewall height	6.35 in (161.3 mm)	5.55 in (141.0 mm)	−0.80 in (−20.2 mm)	−12.56%
Section width	8.46 in (215.0 mm)	9.25 in (235.0 mm)	+0.79 in (+20.0 mm)	+9.30%
Circumference	83.87 in (2,130.3 mm)	82.00 in (2,082.9 mm)	−1.87 in (−47.4 mm)	−2.23%
Revolutions per mile	755	773	+17	+2.28%

True speed with the speedometer calibrated for 215/75R14
Indicated	Actual on 215/75R14	Actual on 235/60R15	Difference
30 mph	30.0 mph	29.3 mph	−0.7 mph
60 mph	60.0 mph	58.7 mph	−1.3 mph
75 mph	75.0 mph	73.3 mph	−1.7 mph

Ride-height change: 235/60R15 lowers the vehicle by 0.30 in (7.5 mm) at the axle (half the −15.1 mm diameter difference).

235/60R15 is 0.59 in shorter than 215/75R14 and 20 mm wider, a 2.23% difference in overall diameter.

With the speedometer calibrated for 215/75R14, an indicated 60 mph is actually 58.7 mph on 235/60R15, and revolutions per mile change from 755 to 773.

235/60R15 mounts on a 15-inch wheel, a plus-1 fitment from the 14-inch wheel of 215/75R14.

Size pages

Other comparisons with 215/75R14

Other comparisons with 235/60R15

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