185/60R14 vs 195/50R15

195/50R15 is 0.06 in (1.6 mm) shorter than 185/60R14, a −0.28% diameter difference. With the speedometer set for 185/60R14, an indicated 60 mph is 59.8 mph on 195/50R15.

Is this a safe swap?

Diameter difference −0.28%: under 1%

By overall diameter alone, 195/50R15 is a near match for 185/60R14; the speedometer changes by less than 1%. 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.

185/60R14 vs 195/50R15 differences
Measurement	185/60R14	195/50R15	Difference	% diff
Overall diameter	22.74 in (577.6 mm)	22.68 in (576.0 mm)	−0.06 in (−1.6 mm)	−0.28%
Sidewall height	4.37 in (111.0 mm)	3.84 in (97.5 mm)	−0.53 in (−13.5 mm)	−12.16%
Section width	7.28 in (185.0 mm)	7.68 in (195.0 mm)	+0.39 in (+10.0 mm)	+5.41%
Circumference	71.44 in (1,814.6 mm)	71.24 in (1,809.6 mm)	−0.20 in (−5.0 mm)	−0.28%
Revolutions per mile	887	889	+2	+0.28%

True speed with the speedometer calibrated for 185/60R14
Indicated	Actual on 185/60R14	Actual on 195/50R15	Difference
30 mph	30.0 mph	29.9 mph	−0.1 mph
60 mph	60.0 mph	59.8 mph	−0.2 mph
75 mph	75.0 mph	74.8 mph	−0.2 mph

Ride-height change: 195/50R15 lowers the vehicle by 0.03 in (0.8 mm) at the axle (half the −1.6 mm diameter difference).

195/50R15 is 0.06 in shorter than 185/60R14 and 10 mm wider, a 0.28% difference in overall diameter.

With the speedometer calibrated for 185/60R14, an indicated 60 mph is actually 59.8 mph on 195/50R15, and revolutions per mile change from 887 to 889.

195/50R15 mounts on a 15-inch wheel, a plus-1 fitment from the 14-inch wheel of 185/60R14.

Size pages

Other comparisons with 185/60R14

Other comparisons with 195/50R15

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