TireSizesFinder

215/60R15 vs 205/50R17

205/50R17 is 0.09 in (2.2 mm) shorter than 215/60R15, a −0.34% diameter difference. With the speedometer set for 215/60R15, an indicated 60 mph is 59.8 mph on 205/50R17.

Is this a safe swap?

Diameter difference −0.34%: under 1%

By overall diameter alone, 205/50R17 is a near match for 215/60R15; 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: 215/60R15 (25.16 in) vs 205/50R17 (25.07 in)215/60R1525.16 in × 8.46 in205/50R1725.07 in × 8.07 in
Side profile and tread width, drawn to the same scale.
215/60R15 vs 205/50R17 differences
Measurement215/60R15205/50R17Difference% diff
Overall diameter25.16 in (639.0 mm)25.07 in (636.8 mm)−0.09 in (−2.2 mm)−0.34%
Sidewall height5.08 in (129.0 mm)4.04 in (102.5 mm)−1.04 in (−26.5 mm)−20.54%
Section width8.46 in (215.0 mm)8.07 in (205.0 mm)−0.39 in (−10.0 mm)−4.65%
Circumference79.03 in (2,007.5 mm)78.76 in (2,000.6 mm)−0.27 in (−6.9 mm)−0.34%
Revolutions per mile802804+3+0.35%
True speed with the speedometer calibrated for 215/60R15
IndicatedActual on 215/60R15Actual on 205/50R17Difference
30 mph30.0 mph29.9 mph−0.1 mph
60 mph60.0 mph59.8 mph−0.2 mph
75 mph75.0 mph74.7 mph−0.3 mph

Ride-height change: 205/50R17 lowers the vehicle by 0.04 in (1.1 mm) at the axle (half the −2.2 mm diameter difference).

205/50R17 is 0.09 in shorter than 215/60R15 and 10 mm narrower, a 0.34% difference in overall diameter.

With the speedometer calibrated for 215/60R15, an indicated 60 mph is actually 59.8 mph on 205/50R17, and revolutions per mile change from 802 to 804.

205/50R17 mounts on a 17-inch wheel, a plus-2 fitment from the 15-inch wheel of 215/60R15.

Size pages

Other comparisons with 215/60R15

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