TireSizesFinder

175/70R13 vs 175/60R15

175/60R15 is 0.62 in (15.8 mm) taller than 175/70R13, a +2.75% diameter difference. With the speedometer set for 175/70R13, an indicated 60 mph is 61.6 mph on 175/60R15.

Is this a safe swap?

Diameter difference +2.75%: within the ±3% guideline

By overall diameter alone, 175/60R15 falls inside the ±3% range commonly used as a guideline when replacing 175/70R13. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 175/70R13 (22.65 in) vs 175/60R15 (23.27 in)175/70R1322.65 in × 6.89 in175/60R1523.27 in × 6.89 in
Side profile and tread width, drawn to the same scale.
175/70R13 vs 175/60R15 differences
Measurement175/70R13175/60R15Difference% diff
Overall diameter22.65 in (575.2 mm)23.27 in (591.0 mm)+0.62 in (+15.8 mm)+2.75%
Sidewall height4.82 in (122.5 mm)4.13 in (105.0 mm)−0.69 in (−17.5 mm)−14.29%
Section width6.89 in (175.0 mm)6.89 in (175.0 mm)0.00 in (0.0 mm)0.00%
Circumference71.14 in (1,807.0 mm)73.10 in (1,856.7 mm)+1.95 in (+49.6 mm)+2.75%
Revolutions per mile891867−24−2.67%
True speed with the speedometer calibrated for 175/70R13
IndicatedActual on 175/70R13Actual on 175/60R15Difference
30 mph30.0 mph30.8 mph+0.8 mph
60 mph60.0 mph61.6 mph+1.6 mph
75 mph75.0 mph77.1 mph+2.1 mph

Ride-height change: 175/60R15 raises the vehicle by 0.31 in (7.9 mm) at the axle (half the +15.8 mm diameter difference).

175/60R15 is 0.62 in taller than 175/70R13 and the same width, a 2.75% difference in overall diameter.

With the speedometer calibrated for 175/70R13, an indicated 60 mph is actually 61.6 mph on 175/60R15, and revolutions per mile change from 891 to 867.

175/60R15 mounts on a 15-inch wheel, a plus-2 fitment from the 13-inch wheel of 175/70R13.

Size pages

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