165/80R13 vs 195/55R15

195/55R15 is 0.05 in (1.3 mm) taller than 165/80R13, a +0.22% diameter difference. With the speedometer set for 165/80R13, an indicated 60 mph is 60.1 mph on 195/55R15.

Is this a safe swap?

Diameter difference +0.22%: under 1%

By overall diameter alone, 195/55R15 is a near match for 165/80R13; 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.

165/80R13 vs 195/55R15 differences
Measurement	165/80R13	195/55R15	Difference	% diff
Overall diameter	23.39 in (594.2 mm)	23.44 in (595.5 mm)	+0.05 in (+1.3 mm)	+0.22%
Sidewall height	5.20 in (132.0 mm)	4.22 in (107.3 mm)	−0.97 in (−24.7 mm)	−18.75%
Section width	6.50 in (165.0 mm)	7.68 in (195.0 mm)	+1.18 in (+30.0 mm)	+18.18%
Circumference	73.49 in (1,866.7 mm)	73.65 in (1,870.8 mm)	+0.16 in (+4.1 mm)	+0.22%
Revolutions per mile	862	860	−2	−0.22%

True speed with the speedometer calibrated for 165/80R13
Indicated	Actual on 165/80R13	Actual on 195/55R15	Difference
30 mph	30.0 mph	30.1 mph	+0.1 mph
60 mph	60.0 mph	60.1 mph	+0.1 mph
75 mph	75.0 mph	75.2 mph	+0.2 mph

Ride-height change: 195/55R15 raises the vehicle by 0.03 in (0.6 mm) at the axle (half the +1.3 mm diameter difference).

195/55R15 is 0.05 in taller than 165/80R13 and 30 mm wider, a 0.22% difference in overall diameter.

With the speedometer calibrated for 165/80R13, an indicated 60 mph is actually 60.1 mph on 195/55R15, and revolutions per mile change from 862 to 860.

195/55R15 mounts on a 15-inch wheel, a plus-2 fitment from the 13-inch wheel of 165/80R13.

Size pages

Other comparisons with 165/80R13

Other comparisons with 195/55R15

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