195/55R16 vs 185/60R16

185/60R16 is 0.30 in (7.5 mm) taller than 195/55R16, a +1.21% diameter difference. With the speedometer set for 195/55R16, an indicated 60 mph is 60.7 mph on 185/60R16.

Is this a safe swap?

Diameter difference +1.21%: within the ±3% guideline

By overall diameter alone, 185/60R16 falls inside the ±3% range commonly used as a guideline when replacing 195/55R16. 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.

195/55R16 vs 185/60R16 differences
Measurement	195/55R16	185/60R16	Difference	% diff
Overall diameter	24.44 in (620.9 mm)	24.74 in (628.4 mm)	+0.30 in (+7.5 mm)	+1.21%
Sidewall height	4.22 in (107.3 mm)	4.37 in (111.0 mm)	+0.15 in (+3.8 mm)	+3.50%
Section width	7.68 in (195.0 mm)	7.28 in (185.0 mm)	−0.39 in (−10.0 mm)	−5.13%
Circumference	76.80 in (1,950.6 mm)	77.72 in (1,974.2 mm)	+0.93 in (+23.6 mm)	+1.21%
Revolutions per mile	825	815	−10	−1.19%

True speed with the speedometer calibrated for 195/55R16
Indicated	Actual on 195/55R16	Actual on 185/60R16	Difference
30 mph	30.0 mph	30.4 mph	+0.4 mph
60 mph	60.0 mph	60.7 mph	+0.7 mph
75 mph	75.0 mph	75.9 mph	+0.9 mph

Ride-height change: 185/60R16 raises the vehicle by 0.15 in (3.8 mm) at the axle (half the +7.5 mm diameter difference).

185/60R16 is 0.30 in taller than 195/55R16 and 10 mm narrower, a 1.21% difference in overall diameter.

With the speedometer calibrated for 195/55R16, an indicated 60 mph is actually 60.7 mph on 185/60R16, and revolutions per mile change from 825 to 815.

Both sizes mount on 16-inch wheels.

Size pages

Other comparisons with 195/55R16

Other comparisons with 185/60R16

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