TireSizesFinder

225/65R16 vs 215/70R16

215/70R16 is 0.33 in (8.5 mm) taller than 225/65R16, a +1.22% diameter difference. With the speedometer set for 225/65R16, an indicated 60 mph is 60.7 mph on 215/70R16.

Is this a safe swap?

Diameter difference +1.22%: within the ±3% guideline

By overall diameter alone, 215/70R16 falls inside the ±3% range commonly used as a guideline when replacing 225/65R16. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 225/65R16 (27.52 in) vs 215/70R16 (27.85 in)225/65R1627.52 in × 8.86 in215/70R1627.85 in × 8.46 in
Side profile and tread width, drawn to the same scale.
225/65R16 vs 215/70R16 differences
Measurement225/65R16215/70R16Difference% diff
Overall diameter27.52 in (698.9 mm)27.85 in (707.4 mm)+0.33 in (+8.5 mm)+1.22%
Sidewall height5.76 in (146.3 mm)5.93 in (150.5 mm)+0.17 in (+4.3 mm)+2.91%
Section width8.86 in (225.0 mm)8.46 in (215.0 mm)−0.39 in (−10.0 mm)−4.44%
Circumference86.44 in (2,195.7 mm)87.49 in (2,222.4 mm)+1.05 in (+26.7 mm)+1.22%
Revolutions per mile733724−9−1.20%
True speed with the speedometer calibrated for 225/65R16
IndicatedActual on 225/65R16Actual on 215/70R16Difference
30 mph30.0 mph30.4 mph+0.4 mph
60 mph60.0 mph60.7 mph+0.7 mph
75 mph75.0 mph75.9 mph+0.9 mph

Ride-height change: 215/70R16 raises the vehicle by 0.17 in (4.3 mm) at the axle (half the +8.5 mm diameter difference).

215/70R16 is 0.33 in taller than 225/65R16 and 10 mm narrower, a 1.22% difference in overall diameter.

With the speedometer calibrated for 225/65R16, an indicated 60 mph is actually 60.7 mph on 215/70R16, and revolutions per mile change from 733 to 724.

Both sizes mount on 16-inch wheels.

Size pages

Other comparisons with 225/65R16

Other comparisons with 215/70R16

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