TireSizesFinder

245/65R16 vs 225/65R17

225/65R17 is 0.02 in (0.6 mm) shorter than 245/65R16, a −0.08% diameter difference. With the speedometer set for 245/65R16, an indicated 60 mph is 60.0 mph on 225/65R17.

Is this a safe swap?

Diameter difference −0.08%: under 1%

By overall diameter alone, 225/65R17 is a near match for 245/65R16; 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: 245/65R16 (28.54 in) vs 225/65R17 (28.52 in)245/65R1628.54 in × 9.65 in225/65R1728.52 in × 8.86 in
Side profile and tread width, drawn to the same scale.
245/65R16 vs 225/65R17 differences
Measurement245/65R16225/65R17Difference% diff
Overall diameter28.54 in (724.9 mm)28.52 in (724.3 mm)−0.02 in (−0.6 mm)−0.08%
Sidewall height6.27 in (159.3 mm)5.76 in (146.3 mm)−0.51 in (−13.0 mm)−8.16%
Section width9.65 in (245.0 mm)8.86 in (225.0 mm)−0.79 in (−20.0 mm)−8.16%
Circumference89.66 in (2,277.3 mm)89.58 in (2,275.5 mm)−0.07 in (−1.9 mm)−0.08%
Revolutions per mile707707+1+0.08%
True speed with the speedometer calibrated for 245/65R16
IndicatedActual on 245/65R16Actual on 225/65R17Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph60.0 mph0.0 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 225/65R17 lowers the vehicle by 0.01 in (0.3 mm) at the axle (half the −0.6 mm diameter difference).

225/65R17 is 0.02 in shorter than 245/65R16 and 20 mm narrower, a 0.08% difference in overall diameter.

With the speedometer calibrated for 245/65R16, an indicated 60 mph is actually 60.0 mph on 225/65R17, and revolutions per mile change from 707 to 707.

225/65R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 245/65R16.

Size pages

Other comparisons with 245/65R16

Other comparisons with 225/65R17

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