Home215/55R17 vs 225/55R17

215/55R17 vs 225/55R17

The 225/55R17 is 26.74 in tall: 0.43 in (1.6%) taller than the 215/55R17 at 26.31 in. At an indicated 60 mph you'd be doing 61.0 mph.The 225/55R17 is 679.3 mm tall: 11.0 mm (1.6%) taller than the 215/55R17 at 668.3 mm. At an indicated 100 km/h you'd be doing 101.6 km/h.

By David Owen.

in, mphmm, km/h

Each figure is rounded separately, so related figures can differ in the last digit.

These are size-code figures only. Whether a size fits, clears and carries your load depends on your vehicle and the tire, so check with a tire shop.

What changes

Only the section width changes, from 8.46 in to 8.86 in. The aspect ratio is a percentage of the width, so each sidewall grows with it, by 0.21 in, and the 225/55R17 ends up 0.43 in taller overall.

Makers' own measured diameters run 26.2 to 26.3 in for the 215/55R17 and 26.77 to 26.8 in for the 225/55R17, against the calculated 26.31 in and 26.74 in. Real tires vary by brand and tread design; the figures in the table come from the size code alone.

Speedometer and odometer

A speedometer that read true on the 215/55R17 reads low on the 225/55R17: an indicated 60 mph is a true 61.0 mph.A speedometer that read true on the 215/55R17 reads low on the 225/55R17: an indicated 100 km/h is a true 101.6 km/h.

The odometer records about 9,840 miles for every 10,000 you drive.The odometer records about 9,840 km for every 10,000 you drive.

Ground clearance and size class

Ground clearance at the axle rises by 0.22 in: half the diameter change, unloaded.Ground clearance at the axle rises by 5.5 mm: half the diameter change, unloaded. By calculated diameter the 215/55R17 is a 26-inch tire and the 225/55R17 a 27-inch tire.

Same change, other sizes

The same change in diameter, width and sidewall has its own page: 275/55R20 vs 285/55R20.

Compare other sizes in the calculator