TireSizesFinder

205/65R16 vs 215/55R17

215/55R17 is 0.18 in (4.6 mm) shorter than 205/65R16, a −0.68% diameter difference. With the speedometer set for 205/65R16, an indicated 60 mph is 59.6 mph on 215/55R17.

Is this a safe swap?

Diameter difference −0.68%: under 1%

By overall diameter alone, 215/55R17 is a near match for 205/65R16; 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: 205/65R16 (26.49 in) vs 215/55R17 (26.31 in)205/65R1626.49 in × 8.07 in215/55R1726.31 in × 8.46 in
Side profile and tread width, drawn to the same scale.
205/65R16 vs 215/55R17 differences
Measurement205/65R16215/55R17Difference% diff
Overall diameter26.49 in (672.9 mm)26.31 in (668.3 mm)−0.18 in (−4.6 mm)−0.68%
Sidewall height5.25 in (133.3 mm)4.66 in (118.3 mm)−0.59 in (−15.0 mm)−11.26%
Section width8.07 in (205.0 mm)8.46 in (215.0 mm)+0.39 in (+10.0 mm)+4.88%
Circumference83.23 in (2,114.0 mm)82.66 in (2,099.5 mm)−0.57 in (−14.5 mm)−0.68%
Revolutions per mile761767+5+0.69%
True speed with the speedometer calibrated for 205/65R16
IndicatedActual on 205/65R16Actual on 215/55R17Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.6 mph−0.4 mph
75 mph75.0 mph74.5 mph−0.5 mph

Ride-height change: 215/55R17 lowers the vehicle by 0.09 in (2.3 mm) at the axle (half the −4.6 mm diameter difference).

215/55R17 is 0.18 in shorter than 205/65R16 and 10 mm wider, a 0.68% difference in overall diameter.

With the speedometer calibrated for 205/65R16, an indicated 60 mph is actually 59.6 mph on 215/55R17, and revolutions per mile change from 761 to 767.

215/55R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 205/65R16.

Size pages

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