195/65R15 vs 185/60R16

185/60R16 is 0.24 in (6.1 mm) shorter than 195/65R15, a −0.96% diameter difference. With the speedometer set for 195/65R15, an indicated 60 mph is 59.4 mph on 185/60R16.

Is this a safe swap?

Diameter difference −0.96%: under 1%

By overall diameter alone, 185/60R16 is a near match for 195/65R15; 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.

195/65R15 vs 185/60R16 differences
Measurement	195/65R15	185/60R16	Difference	% diff
Overall diameter	24.98 in (634.5 mm)	24.74 in (628.4 mm)	−0.24 in (−6.1 mm)	−0.96%
Sidewall height	4.99 in (126.8 mm)	4.37 in (111.0 mm)	−0.62 in (−15.7 mm)	−12.43%
Section width	7.68 in (195.0 mm)	7.28 in (185.0 mm)	−0.39 in (−10.0 mm)	−5.13%
Circumference	78.48 in (1,993.3 mm)	77.72 in (1,974.2 mm)	−0.75 in (−19.2 mm)	−0.96%
Revolutions per mile	807	815	+8	+0.97%

True speed with the speedometer calibrated for 195/65R15
Indicated	Actual on 195/65R15	Actual on 185/60R16	Difference
30 mph	30.0 mph	29.7 mph	−0.3 mph
60 mph	60.0 mph	59.4 mph	−0.6 mph
75 mph	75.0 mph	74.3 mph	−0.7 mph

Ride-height change: 185/60R16 lowers the vehicle by 0.12 in (3.1 mm) at the axle (half the −6.1 mm diameter difference).

185/60R16 is 0.24 in shorter than 195/65R15 and 10 mm narrower, a 0.96% difference in overall diameter.

With the speedometer calibrated for 195/65R15, an indicated 60 mph is actually 59.4 mph on 185/60R16, and revolutions per mile change from 807 to 815.

185/60R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 195/65R15.

Size pages

Other comparisons with 195/65R15

Other comparisons with 185/60R16

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