TireSizesFinder

165/65R15 vs 195/55R15

195/55R15 is 0.00 in (0.0 mm) taller than 165/65R15, a 0.00% diameter difference. With the speedometer set for 165/65R15, an indicated 60 mph is 60.0 mph on 195/55R15.

Is this a safe swap?

Diameter difference 0.00%: under 1%

By overall diameter alone, 195/55R15 is a near match for 165/65R15; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 165/65R15 (23.44 in) vs 195/55R15 (23.44 in)165/65R1523.44 in × 6.50 in195/55R1523.44 in × 7.68 in
Side profile and tread width, drawn to the same scale.
165/65R15 vs 195/55R15 differences
Measurement165/65R15195/55R15Difference% diff
Overall diameter23.44 in (595.5 mm)23.44 in (595.5 mm)0.00 in (0.0 mm)0.00%
Sidewall height4.22 in (107.3 mm)4.22 in (107.3 mm)0.00 in (0.0 mm)0.00%
Section width6.50 in (165.0 mm)7.68 in (195.0 mm)+1.18 in (+30.0 mm)+18.18%
Circumference73.65 in (1,870.8 mm)73.65 in (1,870.8 mm)0.00 in (0.0 mm)0.00%
Revolutions per mile86086000.00%
True speed with the speedometer calibrated for 165/65R15
IndicatedActual on 165/65R15Actual on 195/55R15Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph60.0 mph0.0 mph
75 mph75.0 mph75.0 mph0.0 mph

Ride-height change: 195/55R15 does not change the vehicle at the axle (half the 0.0 mm diameter difference).

195/55R15 is the same height as 165/65R15 and 30 mm wider, a 0.00% difference in overall diameter.

With the speedometer calibrated for 165/65R15, an indicated 60 mph is actually 60.0 mph on 195/55R15, and revolutions per mile change from 860 to 860.

Both sizes mount on 15-inch wheels.

Size pages

Other comparisons with 165/65R15

Other comparisons with 195/55R15

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.