TireSizesFinder

225/50R15 vs 195/50R16

195/50R16 is 0.18 in (4.6 mm) shorter than 225/50R15, a −0.76% diameter difference. With the speedometer set for 225/50R15, an indicated 60 mph is 59.5 mph on 195/50R16.

Is this a safe swap?

Diameter difference −0.76%: under 1%

By overall diameter alone, 195/50R16 is a near match for 225/50R15; 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: 225/50R15 (23.86 in) vs 195/50R16 (23.68 in)225/50R1523.86 in × 8.86 in195/50R1623.68 in × 7.68 in
Side profile and tread width, drawn to the same scale.
225/50R15 vs 195/50R16 differences
Measurement225/50R15195/50R16Difference% diff
Overall diameter23.86 in (606.0 mm)23.68 in (601.4 mm)−0.18 in (−4.6 mm)−0.76%
Sidewall height4.43 in (112.5 mm)3.84 in (97.5 mm)−0.59 in (−15.0 mm)−13.33%
Section width8.86 in (225.0 mm)7.68 in (195.0 mm)−1.18 in (−30.0 mm)−13.33%
Circumference74.95 in (1,903.8 mm)74.38 in (1,889.4 mm)−0.57 in (−14.5 mm)−0.76%
Revolutions per mile845852+6+0.76%
True speed with the speedometer calibrated for 225/50R15
IndicatedActual on 225/50R15Actual on 195/50R16Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.5 mph−0.5 mph
75 mph75.0 mph74.4 mph−0.6 mph

Ride-height change: 195/50R16 lowers the vehicle by 0.09 in (2.3 mm) at the axle (half the −4.6 mm diameter difference).

195/50R16 is 0.18 in shorter than 225/50R15 and 30 mm narrower, a 0.76% difference in overall diameter.

With the speedometer calibrated for 225/50R15, an indicated 60 mph is actually 59.5 mph on 195/50R16, and revolutions per mile change from 845 to 852.

195/50R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 225/50R15.

Size pages

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