TireSizesFinder

225/55R16 vs 225/50R17

225/50R17 is 0.11 in (2.9 mm) taller than 225/55R16, a +0.44% diameter difference. With the speedometer set for 225/55R16, an indicated 60 mph is 60.3 mph on 225/50R17.

Is this a safe swap?

Diameter difference +0.44%: under 1%

By overall diameter alone, 225/50R17 is a near match for 225/55R16; 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: 225/55R16 (25.74 in) vs 225/50R17 (25.86 in)225/55R1625.74 in × 8.86 in225/50R1725.86 in × 8.86 in
Side profile and tread width, drawn to the same scale.
225/55R16 vs 225/50R17 differences
Measurement225/55R16225/50R17Difference% diff
Overall diameter25.74 in (653.9 mm)25.86 in (656.8 mm)+0.11 in (+2.9 mm)+0.44%
Sidewall height4.87 in (123.8 mm)4.43 in (112.5 mm)−0.44 in (−11.2 mm)−9.09%
Section width8.86 in (225.0 mm)8.86 in (225.0 mm)0.00 in (0.0 mm)0.00%
Circumference80.88 in (2,054.3 mm)81.24 in (2,063.4 mm)+0.36 in (+9.1 mm)+0.44%
Revolutions per mile783780−3−0.44%
True speed with the speedometer calibrated for 225/55R16
IndicatedActual on 225/55R16Actual on 225/50R17Difference
30 mph30.0 mph30.1 mph+0.1 mph
60 mph60.0 mph60.3 mph+0.3 mph
75 mph75.0 mph75.3 mph+0.3 mph

Ride-height change: 225/50R17 raises the vehicle by 0.06 in (1.4 mm) at the axle (half the +2.9 mm diameter difference).

225/50R17 is 0.11 in taller than 225/55R16 and the same width, a 0.44% difference in overall diameter.

With the speedometer calibrated for 225/55R16, an indicated 60 mph is actually 60.3 mph on 225/50R17, and revolutions per mile change from 783 to 780.

225/50R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 225/55R16.

Size pages

Other comparisons with 225/55R16

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