TireSizesFinder

215/65R16 vs 225/55R17

225/55R17 is 0.26 in (6.6 mm) shorter than 215/65R16, a −0.96% diameter difference. With the speedometer set for 215/65R16, an indicated 60 mph is 59.4 mph on 225/55R17.

Is this a safe swap?

Diameter difference −0.96%: under 1%

By overall diameter alone, 225/55R17 is a near match for 215/65R16; 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: 215/65R16 (27.00 in) vs 225/55R17 (26.74 in)215/65R1627.00 in × 8.46 in225/55R1726.74 in × 8.86 in
Side profile and tread width, drawn to the same scale.
215/65R16 vs 225/55R17 differences
Measurement215/65R16225/55R17Difference% diff
Overall diameter27.00 in (685.9 mm)26.74 in (679.3 mm)−0.26 in (−6.6 mm)−0.96%
Sidewall height5.50 in (139.8 mm)4.87 in (123.8 mm)−0.63 in (−16.0 mm)−11.45%
Section width8.46 in (215.0 mm)8.86 in (225.0 mm)+0.39 in (+10.0 mm)+4.65%
Circumference84.84 in (2,154.8 mm)84.02 in (2,134.1 mm)−0.82 in (−20.7 mm)−0.96%
Revolutions per mile747754+7+0.97%
True speed with the speedometer calibrated for 215/65R16
IndicatedActual on 215/65R16Actual on 225/55R17Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.4 mph−0.6 mph
75 mph75.0 mph74.3 mph−0.7 mph

Ride-height change: 225/55R17 lowers the vehicle by 0.13 in (3.3 mm) at the axle (half the −6.6 mm diameter difference).

225/55R17 is 0.26 in shorter than 215/65R16 and 10 mm wider, a 0.96% difference in overall diameter.

With the speedometer calibrated for 215/65R16, an indicated 60 mph is actually 59.4 mph on 225/55R17, and revolutions per mile change from 747 to 754.

225/55R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 215/65R16.

Size pages

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