CarSpecsHQ

225/55R17 vs 215/65R17

215/65R17 is outside the ±3% rule as a replacement for 225/55R17: the diameter differs by +4.71%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

17" rim
225/55R17 26.74" · 215/65R17 28.00" · drawn to scale

Side by side

225/55R17215/65R17Difference
Overall diameter26.74"28.00"+1.26" (+4.71%)
Section width225 mm215 mm-10 mm
Sidewall4.87"5.50"+0.63"
Rim17"17"same
Circumference84.0"88.0"+4.0"
Revs per mile754720-34
Ride height——+0.63"
Speedometer reads 60 mph60.062.8+2.8 mph

Speedometer and odometer

020406080100120 reads 60 · actual 62.8 mph

With 215/65R17 on a car calibrated for 225/55R17, the speedometer reads 57.3 mph when you're really doing 60, and the odometer under-counts by 4.7%.

Speedo showsActual speed
30 mph31.4 mph
45 mph47.1 mph
60 mph62.8 mph
70 mph73.3 mph
80 mph83.8 mph

Other sizes close to 225/55R17

Questions

Can I replace 225/55R17 with 215/65R17?

215/65R17 is outside the ±3% rule as a replacement for 225/55R17: the diameter differs by +4.71%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 225/55R17 and 215/65R17?

215/65R17 is 1.26" taller and 10 mm narrower; the sidewall is +0.63". At an indicated 60 mph you'd actually be doing 62.8 mph.

Will 215/65R17 fit on 225/55R17 wheels?

Both use a 17" rim, so the wheel diameter matches; check the wheel's width range for a 215 mm tire and the fender clearance.