225/55R16 vs 205/55R17

205/55R17 is 0.13 in (3.4 mm) taller than 225/55R16, a +0.52% diameter difference. With the speedometer set for 225/55R16, an indicated 60 mph is 60.3 mph on 205/55R17.

Is this a safe swap?

Diameter difference +0.52%: under 1%

By overall diameter alone, 205/55R17 is a near match for 225/55R16; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

Side profile and tread width, drawn to the same scale.

225/55R16 vs 205/55R17 differences
Measurement	225/55R16	205/55R17	Difference	% diff
Overall diameter	25.74 in (653.9 mm)	25.88 in (657.3 mm)	+0.13 in (+3.4 mm)	+0.52%
Sidewall height	4.87 in (123.8 mm)	4.44 in (112.8 mm)	−0.43 in (−11.0 mm)	−8.89%
Section width	8.86 in (225.0 mm)	8.07 in (205.0 mm)	−0.79 in (−20.0 mm)	−8.89%
Circumference	80.88 in (2,054.3 mm)	81.30 in (2,065.0 mm)	+0.42 in (+10.7 mm)	+0.52%
Revolutions per mile	783	779	−4	−0.52%

True speed with the speedometer calibrated for 225/55R16
Indicated	Actual on 225/55R16	Actual on 205/55R17	Difference
30 mph	30.0 mph	30.2 mph	+0.2 mph
60 mph	60.0 mph	60.3 mph	+0.3 mph
75 mph	75.0 mph	75.4 mph	+0.4 mph

Ride-height change: 205/55R17 raises the vehicle by 0.07 in (1.7 mm) at the axle (half the +3.4 mm diameter difference).

205/55R17 is 0.13 in taller than 225/55R16 and 20 mm narrower, a 0.52% difference in overall diameter.

With the speedometer calibrated for 225/55R16, an indicated 60 mph is actually 60.3 mph on 205/55R17, and revolutions per mile change from 783 to 779.

205/55R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 225/55R16.

Size pages

Other comparisons with 225/55R16

Other comparisons with 205/55R17

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.