TireSizesFinder

195/75R14 vs 205/65R15

205/65R15 is 0.02 in (0.6 mm) shorter than 195/75R14, a −0.09% diameter difference. With the speedometer set for 195/75R14, an indicated 60 mph is 59.9 mph on 205/65R15.

Is this a safe swap?

Diameter difference −0.09%: under 1%

By overall diameter alone, 205/65R15 is a near match for 195/75R14; 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: 195/75R14 (25.52 in) vs 205/65R15 (25.49 in)195/75R1425.52 in × 7.68 in205/65R1525.49 in × 8.07 in
Side profile and tread width, drawn to the same scale.
195/75R14 vs 205/65R15 differences
Measurement195/75R14205/65R15Difference% diff
Overall diameter25.52 in (648.1 mm)25.49 in (647.5 mm)−0.02 in (−0.6 mm)−0.09%
Sidewall height5.76 in (146.3 mm)5.25 in (133.3 mm)−0.51 in (−13.0 mm)−8.89%
Section width7.68 in (195.0 mm)8.07 in (205.0 mm)+0.39 in (+10.0 mm)+5.13%
Circumference80.16 in (2,036.1 mm)80.09 in (2,034.2 mm)−0.07 in (−1.9 mm)−0.09%
Revolutions per mile790791+1+0.09%
True speed with the speedometer calibrated for 195/75R14
IndicatedActual on 195/75R14Actual on 205/65R15Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph59.9 mph−0.1 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 205/65R15 lowers the vehicle by 0.01 in (0.3 mm) at the axle (half the −0.6 mm diameter difference).

205/65R15 is 0.02 in shorter than 195/75R14 and 10 mm wider, a 0.09% difference in overall diameter.

With the speedometer calibrated for 195/75R14, an indicated 60 mph is actually 59.9 mph on 205/65R15, and revolutions per mile change from 790 to 791.

205/65R15 mounts on a 15-inch wheel, a plus-1 fitment from the 14-inch wheel of 195/75R14.

Size pages

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