TireSizesFinder

225/75R15 vs 205/75R16

205/75R16 is 0.18 in (4.6 mm) shorter than 225/75R15, a −0.64% diameter difference. With the speedometer set for 225/75R15, an indicated 60 mph is 59.6 mph on 205/75R16.

Is this a safe swap?

Diameter difference −0.64%: under 1%

By overall diameter alone, 205/75R16 is a near match for 225/75R15; 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: 225/75R15 (28.29 in) vs 205/75R16 (28.11 in)225/75R1528.29 in × 8.86 in205/75R1628.11 in × 8.07 in
Side profile and tread width, drawn to the same scale.
225/75R15 vs 205/75R16 differences
Measurement225/75R15205/75R16Difference% diff
Overall diameter28.29 in (718.5 mm)28.11 in (713.9 mm)−0.18 in (−4.6 mm)−0.64%
Sidewall height6.64 in (168.8 mm)6.05 in (153.8 mm)−0.59 in (−15.0 mm)−8.89%
Section width8.86 in (225.0 mm)8.07 in (205.0 mm)−0.79 in (−20.0 mm)−8.89%
Circumference88.87 in (2,257.2 mm)88.30 in (2,242.8 mm)−0.57 in (−14.5 mm)−0.64%
Revolutions per mile713718+5+0.64%
True speed with the speedometer calibrated for 225/75R15
IndicatedActual on 225/75R15Actual on 205/75R16Difference
30 mph30.0 mph29.8 mph−0.2 mph
60 mph60.0 mph59.6 mph−0.4 mph
75 mph75.0 mph74.5 mph−0.5 mph

Ride-height change: 205/75R16 lowers the vehicle by 0.09 in (2.3 mm) at the axle (half the −4.6 mm diameter difference).

205/75R16 is 0.18 in shorter than 225/75R15 and 20 mm narrower, a 0.64% difference in overall diameter.

With the speedometer calibrated for 225/75R15, an indicated 60 mph is actually 59.6 mph on 205/75R16, and revolutions per mile change from 713 to 718.

205/75R16 mounts on a 16-inch wheel, a plus-1 fitment from the 15-inch wheel of 225/75R15.

Size pages

Other comparisons with 225/75R15

Other comparisons with 205/75R16

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