195/60R14 vs 195/50R15

195/50R15 is 0.54 in (13.6 mm) shorter than 195/60R14, a −2.31% diameter difference. With the speedometer set for 195/60R14, an indicated 60 mph is 58.6 mph on 195/50R15.

Is this a safe swap?

Diameter difference −2.31%: within the ±3% guideline

By overall diameter alone, 195/50R15 falls inside the ±3% range commonly used as a guideline when replacing 195/60R14. 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.

195/60R14 vs 195/50R15 differences
Measurement	195/60R14	195/50R15	Difference	% diff
Overall diameter	23.21 in (589.6 mm)	22.68 in (576.0 mm)	−0.54 in (−13.6 mm)	−2.31%
Sidewall height	4.61 in (117.0 mm)	3.84 in (97.5 mm)	−0.77 in (−19.5 mm)	−16.67%
Section width	7.68 in (195.0 mm)	7.68 in (195.0 mm)	0.00 in (0.0 mm)	0.00%
Circumference	72.92 in (1,852.3 mm)	71.24 in (1,809.6 mm)	−1.68 in (−42.7 mm)	−2.31%
Revolutions per mile	869	889	+21	+2.36%

True speed with the speedometer calibrated for 195/60R14
Indicated	Actual on 195/60R14	Actual on 195/50R15	Difference
30 mph	30.0 mph	29.3 mph	−0.7 mph
60 mph	60.0 mph	58.6 mph	−1.4 mph
75 mph	75.0 mph	73.3 mph	−1.7 mph

Ride-height change: 195/50R15 lowers the vehicle by 0.27 in (6.8 mm) at the axle (half the −13.6 mm diameter difference).

195/50R15 is 0.54 in shorter than 195/60R14 and the same width, a 2.31% difference in overall diameter.

With the speedometer calibrated for 195/60R14, an indicated 60 mph is actually 58.6 mph on 195/50R15, and revolutions per mile change from 869 to 889.

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

Size pages

Other comparisons with 195/60R14

Other comparisons with 195/50R15

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