TireSizesFinder

205/55R15 vs 215/45R16

215/45R16 is 0.26 in (6.6 mm) shorter than 205/55R15, a −1.09% diameter difference. With the speedometer set for 205/55R15, an indicated 60 mph is 59.3 mph on 215/45R16.

Is this a safe swap?

Diameter difference −1.09%: within the ±3% guideline

By overall diameter alone, 215/45R16 falls inside the ±3% range commonly used as a guideline when replacing 205/55R15. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 205/55R15 (23.88 in) vs 215/45R16 (23.62 in)205/55R1523.88 in × 8.07 in215/45R1623.62 in × 8.46 in
Side profile and tread width, drawn to the same scale.
205/55R15 vs 215/45R16 differences
Measurement205/55R15215/45R16Difference% diff
Overall diameter23.88 in (606.5 mm)23.62 in (599.9 mm)−0.26 in (−6.6 mm)−1.09%
Sidewall height4.44 in (112.8 mm)3.81 in (96.8 mm)−0.63 in (−16.0 mm)−14.19%
Section width8.07 in (205.0 mm)8.46 in (215.0 mm)+0.39 in (+10.0 mm)+4.88%
Circumference75.01 in (1,905.4 mm)74.20 in (1,884.6 mm)−0.82 in (−20.7 mm)−1.09%
Revolutions per mile845854+9+1.10%
True speed with the speedometer calibrated for 205/55R15
IndicatedActual on 205/55R15Actual on 215/45R16Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.3 mph−0.7 mph
75 mph75.0 mph74.2 mph−0.8 mph

Ride-height change: 215/45R16 lowers the vehicle by 0.13 in (3.3 mm) at the axle (half the −6.6 mm diameter difference).

215/45R16 is 0.26 in shorter than 205/55R15 and 10 mm wider, a 1.09% difference in overall diameter.

With the speedometer calibrated for 205/55R15, an indicated 60 mph is actually 59.3 mph on 215/45R16, and revolutions per mile change from 845 to 854.

215/45R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 205/55R15.

Size pages

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