TireSizesFinder

215/70R15 vs 205/65R16

205/65R16 is 0.36 in (9.1 mm) shorter than 215/70R15, a −1.33% diameter difference. With the speedometer set for 215/70R15, an indicated 60 mph is 59.2 mph on 205/65R16.

Is this a safe swap?

Diameter difference −1.33%: within the ±3% guideline

By overall diameter alone, 205/65R16 falls inside the ±3% range commonly used as a guideline when replacing 215/70R15. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 215/70R15 (26.85 in) vs 205/65R16 (26.49 in)215/70R1526.85 in × 8.46 in205/65R1626.49 in × 8.07 in
Side profile and tread width, drawn to the same scale.
215/70R15 vs 205/65R16 differences
Measurement215/70R15205/65R16Difference% diff
Overall diameter26.85 in (682.0 mm)26.49 in (672.9 mm)−0.36 in (−9.1 mm)−1.33%
Sidewall height5.93 in (150.5 mm)5.25 in (133.3 mm)−0.68 in (−17.2 mm)−11.46%
Section width8.46 in (215.0 mm)8.07 in (205.0 mm)−0.39 in (−10.0 mm)−4.65%
Circumference84.35 in (2,142.6 mm)83.23 in (2,114.0 mm)−1.13 in (−28.6 mm)−1.33%
Revolutions per mile751761+10+1.35%
True speed with the speedometer calibrated for 215/70R15
IndicatedActual on 215/70R15Actual on 205/65R16Difference
30 mph30.0 mph29.6 mph−0.4 mph
60 mph60.0 mph59.2 mph−0.8 mph
75 mph75.0 mph74.0 mph−1.0 mph

Ride-height change: 205/65R16 lowers the vehicle by 0.18 in (4.6 mm) at the axle (half the −9.1 mm diameter difference).

205/65R16 is 0.36 in shorter than 215/70R15 and 10 mm narrower, a 1.33% difference in overall diameter.

With the speedometer calibrated for 215/70R15, an indicated 60 mph is actually 59.2 mph on 205/65R16, and revolutions per mile change from 751 to 761.

205/65R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 215/70R15.

Size pages

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