205/55R15 vs 195/60R15

195/60R15 is 0.33 in (8.5 mm) taller than 205/55R15, a +1.40% diameter difference. With the speedometer set for 205/55R15, an indicated 60 mph is 60.8 mph on 195/60R15.

Is this a safe swap?

Diameter difference +1.40%: within the ±3% guideline

By overall diameter alone, 195/60R15 falls inside the ±3% range commonly used as a guideline when replacing 205/55R15. 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.

205/55R15 vs 195/60R15 differences
Measurement	205/55R15	195/60R15	Difference	% diff
Overall diameter	23.88 in (606.5 mm)	24.21 in (615.0 mm)	+0.33 in (+8.5 mm)	+1.40%
Sidewall height	4.44 in (112.8 mm)	4.61 in (117.0 mm)	+0.17 in (+4.3 mm)	+3.77%
Section width	8.07 in (205.0 mm)	7.68 in (195.0 mm)	−0.39 in (−10.0 mm)	−4.88%
Circumference	75.01 in (1,905.4 mm)	76.07 in (1,932.1 mm)	+1.05 in (+26.7 mm)	+1.40%
Revolutions per mile	845	833	−12	−1.38%

True speed with the speedometer calibrated for 205/55R15
Indicated	Actual on 205/55R15	Actual on 195/60R15	Difference
30 mph	30.0 mph	30.4 mph	+0.4 mph
60 mph	60.0 mph	60.8 mph	+0.8 mph
75 mph	75.0 mph	76.1 mph	+1.1 mph

Ride-height change: 195/60R15 raises the vehicle by 0.17 in (4.3 mm) at the axle (half the +8.5 mm diameter difference).

195/60R15 is 0.33 in taller than 205/55R15 and 10 mm narrower, a 1.40% difference in overall diameter.

With the speedometer calibrated for 205/55R15, an indicated 60 mph is actually 60.8 mph on 195/60R15, and revolutions per mile change from 845 to 833.

Both sizes mount on 15-inch wheels.

Size pages

Other comparisons with 205/55R15

Other comparisons with 195/60R15

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