TireSizesFinder

215/50R17 vs 225/50R17

225/50R17 is 0.39 in (10.0 mm) taller than 215/50R17, a +1.55% diameter difference. With the speedometer set for 215/50R17, an indicated 60 mph is 60.9 mph on 225/50R17.

Is this a safe swap?

Diameter difference +1.55%: within the ±3% guideline

By overall diameter alone, 225/50R17 falls inside the ±3% range commonly used as a guideline when replacing 215/50R17. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 215/50R17 (25.46 in) vs 225/50R17 (25.86 in)215/50R1725.46 in × 8.46 in225/50R1725.86 in × 8.86 in
Side profile and tread width, drawn to the same scale.
215/50R17 vs 225/50R17 differences
Measurement215/50R17225/50R17Difference% diff
Overall diameter25.46 in (646.8 mm)25.86 in (656.8 mm)+0.39 in (+10.0 mm)+1.55%
Sidewall height4.23 in (107.5 mm)4.43 in (112.5 mm)+0.20 in (+5.0 mm)+4.65%
Section width8.46 in (215.0 mm)8.86 in (225.0 mm)+0.39 in (+10.0 mm)+4.65%
Circumference80.00 in (2,032.0 mm)81.24 in (2,063.4 mm)+1.24 in (+31.4 mm)+1.55%
Revolutions per mile792780−12−1.52%
True speed with the speedometer calibrated for 215/50R17
IndicatedActual on 215/50R17Actual on 225/50R17Difference
30 mph30.0 mph30.5 mph+0.5 mph
60 mph60.0 mph60.9 mph+0.9 mph
75 mph75.0 mph76.2 mph+1.2 mph

Ride-height change: 225/50R17 raises the vehicle by 0.20 in (5.0 mm) at the axle (half the +10.0 mm diameter difference).

225/50R17 is 0.39 in taller than 215/50R17 and 10 mm wider, a 1.55% difference in overall diameter.

With the speedometer calibrated for 215/50R17, an indicated 60 mph is actually 60.9 mph on 225/50R17, and revolutions per mile change from 792 to 780.

Both sizes mount on 17-inch wheels.

Size pages

Other comparisons with 215/50R17

Other comparisons with 225/50R17

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