CarSpecsHQ

215/55R16 vs 225/55R16

225/55R16 is a safe swap for 215/55R16 by the usual ±3% rule: the diameter differs by +1.71%.

16" rim
215/55R16 25.31" · 225/55R16 25.74" · drawn to scale

Side by side

215/55R16225/55R16Difference
Overall diameter25.31"25.74"+0.43" (+1.71%)
Section width215 mm225 mm+10 mm
Sidewall4.66"4.87"+0.22"
Rim16"16"same
Circumference79.5"80.9"+1.4"
Revs per mile797783-13
Ride height——+0.22"
Speedometer reads 60 mph60.061.0+1.0 mph

Speedometer and odometer

020406080100120 reads 60 · actual 61.0 mph

With 225/55R16 on a car calibrated for 215/55R16, the speedometer reads 59.0 mph when you're really doing 60, and the odometer under-counts by 1.7%.

Speedo showsActual speed
30 mph30.5 mph
45 mph45.8 mph
60 mph61.0 mph
70 mph71.2 mph
80 mph81.4 mph

Other sizes close to 215/55R16

Questions

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

225/55R16 is a safe swap for 215/55R16 by the usual ±3% rule: the diameter differs by +1.71%.

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

225/55R16 is 0.43" taller and 10 mm wider; the sidewall is +0.22". At an indicated 60 mph you'd actually be doing 61.0 mph.

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

Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 225 mm tire and the fender clearance.