TireSizesFinder

225/70R15 vs 235/60R16

235/60R16 is 0.30 in (7.6 mm) shorter than 225/70R15, a −1.09% diameter difference. With the speedometer set for 225/70R15, an indicated 60 mph is 59.3 mph on 235/60R16.

Is this a safe swap?

Diameter difference −1.09%: within the ±3% guideline

By overall diameter alone, 235/60R16 falls inside the ±3% range commonly used as a guideline when replacing 225/70R15. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 225/70R15 (27.40 in) vs 235/60R16 (27.10 in)225/70R1527.40 in × 8.86 in235/60R1627.10 in × 9.25 in
Side profile and tread width, drawn to the same scale.
225/70R15 vs 235/60R16 differences
Measurement225/70R15235/60R16Difference% diff
Overall diameter27.40 in (696.0 mm)27.10 in (688.4 mm)−0.30 in (−7.6 mm)−1.09%
Sidewall height6.20 in (157.5 mm)5.55 in (141.0 mm)−0.65 in (−16.5 mm)−10.48%
Section width8.86 in (225.0 mm)9.25 in (235.0 mm)+0.39 in (+10.0 mm)+4.44%
Circumference86.08 in (2,186.5 mm)85.14 in (2,162.7 mm)−0.94 in (−23.9 mm)−1.09%
Revolutions per mile736744+8+1.10%
True speed with the speedometer calibrated for 225/70R15
IndicatedActual on 225/70R15Actual on 235/60R16Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.3 mph−0.7 mph
75 mph75.0 mph74.2 mph−0.8 mph

Ride-height change: 235/60R16 lowers the vehicle by 0.15 in (3.8 mm) at the axle (half the −7.6 mm diameter difference).

235/60R16 is 0.30 in shorter than 225/70R15 and 10 mm wider, a 1.09% difference in overall diameter.

With the speedometer calibrated for 225/70R15, an indicated 60 mph is actually 59.3 mph on 235/60R16, and revolutions per mile change from 736 to 744.

235/60R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 225/70R15.

Size pages

Other comparisons with 225/70R15

Other comparisons with 235/60R16

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.