195/75R14 vs 225/55R16

225/55R16 is 0.23 in (5.8 mm) taller than 195/75R14, a +0.89% diameter difference. With the speedometer set for 195/75R14, an indicated 60 mph is 60.5 mph on 225/55R16.

Is this a safe swap?

Diameter difference +0.89%: under 1%

By overall diameter alone, 225/55R16 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.

Side profile and tread width, drawn to the same scale.

195/75R14 vs 225/55R16 differences
Measurement	195/75R14	225/55R16	Difference	% diff
Overall diameter	25.52 in (648.1 mm)	25.74 in (653.9 mm)	+0.23 in (+5.8 mm)	+0.89%
Sidewall height	5.76 in (146.3 mm)	4.87 in (123.8 mm)	−0.89 in (−22.5 mm)	−15.38%
Section width	7.68 in (195.0 mm)	8.86 in (225.0 mm)	+1.18 in (+30.0 mm)	+15.38%
Circumference	80.16 in (2,036.1 mm)	80.88 in (2,054.3 mm)	+0.72 in (+18.2 mm)	+0.89%
Revolutions per mile	790	783	−7	−0.89%

True speed with the speedometer calibrated for 195/75R14
Indicated	Actual on 195/75R14	Actual on 225/55R16	Difference
30 mph	30.0 mph	30.3 mph	+0.3 mph
60 mph	60.0 mph	60.5 mph	+0.5 mph
75 mph	75.0 mph	75.7 mph	+0.7 mph

Ride-height change: 225/55R16 raises the vehicle by 0.11 in (2.9 mm) at the axle (half the +5.8 mm diameter difference).

225/55R16 is 0.23 in taller than 195/75R14 and 30 mm wider, a 0.89% difference in overall diameter.

With the speedometer calibrated for 195/75R14, an indicated 60 mph is actually 60.5 mph on 225/55R16, and revolutions per mile change from 790 to 783.

225/55R16 mounts on a 16-inch wheel, a plus-2 fitment from the 14-inch wheel of 195/75R14.

Size pages

Other comparisons with 195/75R14

Other comparisons with 225/55R16

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