CarSpecsHQ

225/55R16 vs 215/65R16

215/65R16 is outside the ±3% rule as a replacement for 225/55R16: the diameter differs by +4.89%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

16" rim
225/55R16 25.74" · 215/65R16 27.00" · drawn to scale

Side by side

225/55R16215/65R16Difference
Overall diameter25.74"27.00"+1.26" (+4.89%)
Section width225 mm215 mm-10 mm
Sidewall4.87"5.50"+0.63"
Rim16"16"same
Circumference80.9"84.8"+4.0"
Revs per mile783747-37
Ride height——+0.63"
Speedometer reads 60 mph60.062.9+2.9 mph

Speedometer and odometer

020406080100120 reads 60 · actual 62.9 mph

With 215/65R16 on a car calibrated for 225/55R16, the speedometer reads 57.2 mph when you're really doing 60, and the odometer under-counts by 4.9%.

Speedo showsActual speed
30 mph31.5 mph
45 mph47.2 mph
60 mph62.9 mph
70 mph73.4 mph
80 mph83.9 mph

Other sizes close to 225/55R16

Questions

Can I replace 225/55R16 with 215/65R16?

215/65R16 is outside the ±3% rule as a replacement for 225/55R16: the diameter differs by +4.89%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 225/55R16 and 215/65R16?

215/65R16 is 1.26" taller and 10 mm narrower; the sidewall is +0.63". At an indicated 60 mph you'd actually be doing 62.9 mph.

Will 215/65R16 fit on 225/55R16 wheels?

Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 215 mm tire and the fender clearance.