TireSizesFinder

165/80R13 vs 175/60R15

175/60R15 is 0.13 in (3.2 mm) shorter than 165/80R13, a −0.54% diameter difference. With the speedometer set for 165/80R13, an indicated 60 mph is 59.7 mph on 175/60R15.

Is this a safe swap?

Diameter difference −0.54%: under 1%

By overall diameter alone, 175/60R15 is a near match for 165/80R13; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 165/80R13 (23.39 in) vs 175/60R15 (23.27 in)165/80R1323.39 in × 6.50 in175/60R1523.27 in × 6.89 in
Side profile and tread width, drawn to the same scale.
165/80R13 vs 175/60R15 differences
Measurement165/80R13175/60R15Difference% diff
Overall diameter23.39 in (594.2 mm)23.27 in (591.0 mm)−0.13 in (−3.2 mm)−0.54%
Sidewall height5.20 in (132.0 mm)4.13 in (105.0 mm)−1.06 in (−27.0 mm)−20.45%
Section width6.50 in (165.0 mm)6.89 in (175.0 mm)+0.39 in (+10.0 mm)+6.06%
Circumference73.49 in (1,866.7 mm)73.10 in (1,856.7 mm)−0.40 in (−10.1 mm)−0.54%
Revolutions per mile862867+5+0.54%
True speed with the speedometer calibrated for 165/80R13
IndicatedActual on 165/80R13Actual on 175/60R15Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.7 mph−0.3 mph
75 mph75.0 mph74.6 mph−0.4 mph

Ride-height change: 175/60R15 lowers the vehicle by 0.06 in (1.6 mm) at the axle (half the −3.2 mm diameter difference).

175/60R15 is 0.13 in shorter than 165/80R13 and 10 mm wider, a 0.54% difference in overall diameter.

With the speedometer calibrated for 165/80R13, an indicated 60 mph is actually 59.7 mph on 175/60R15, and revolutions per mile change from 862 to 867.

175/60R15 mounts on a 15-inch wheel, a plus-2 fitment from the 13-inch wheel of 165/80R13.

Size pages

Other comparisons with 165/80R13

Other comparisons with 175/60R15

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