TireSizesFinder

195/65R14 vs 175/65R15

175/65R15 is 0.02 in (0.6 mm) shorter than 195/65R14, a −0.10% diameter difference. With the speedometer set for 195/65R14, an indicated 60 mph is 59.9 mph on 175/65R15.

Is this a safe swap?

Diameter difference −0.10%: under 1%

By overall diameter alone, 175/65R15 is a near match for 195/65R14; 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: 195/65R14 (23.98 in) vs 175/65R15 (23.96 in)195/65R1423.98 in × 7.68 in175/65R1523.96 in × 6.89 in
Side profile and tread width, drawn to the same scale.
195/65R14 vs 175/65R15 differences
Measurement195/65R14175/65R15Difference% diff
Overall diameter23.98 in (609.1 mm)23.96 in (608.5 mm)−0.02 in (−0.6 mm)−0.10%
Sidewall height4.99 in (126.8 mm)4.48 in (113.8 mm)−0.51 in (−13.0 mm)−10.26%
Section width7.68 in (195.0 mm)6.89 in (175.0 mm)−0.79 in (−20.0 mm)−10.26%
Circumference75.34 in (1,913.5 mm)75.26 in (1,911.7 mm)−0.07 in (−1.9 mm)−0.10%
Revolutions per mile841842+1+0.10%
True speed with the speedometer calibrated for 195/65R14
IndicatedActual on 195/65R14Actual on 175/65R15Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph59.9 mph−0.1 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 175/65R15 lowers the vehicle by 0.01 in (0.3 mm) at the axle (half the −0.6 mm diameter difference).

175/65R15 is 0.02 in shorter than 195/65R14 and 20 mm narrower, a 0.10% difference in overall diameter.

With the speedometer calibrated for 195/65R14, an indicated 60 mph is actually 59.9 mph on 175/65R15, and revolutions per mile change from 841 to 842.

175/65R15 mounts on a 15-inch wheel, a plus-1 fitment from the 14-inch wheel of 195/65R14.

Size pages

Other comparisons with 195/65R14

Other comparisons with 175/65R15

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