CarSpecsHQ

285/50R22 vs 285/55R22

285/55R22 is outside the ±3% rule as a replacement for 285/50R22: the diameter differs by +3.38%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

22" rim
285/50R22 33.22" · 285/55R22 34.34" · drawn to scale

Side by side

285/50R22285/55R22Difference
Overall diameter33.22"34.34"+1.12" (+3.38%)
Section width285 mm285 mm0 mm
Sidewall5.61"6.17"+0.56"
Rim22"22"same
Circumference104.4"107.9"+3.5"
Revs per mile607587-20
Ride height——+0.56"
Speedometer reads 60 mph60.062.0+2.0 mph

Speedometer and odometer

020406080100120 reads 60 · actual 62.0 mph

With 285/55R22 on a car calibrated for 285/50R22, the speedometer reads 58.0 mph when you're really doing 60, and the odometer under-counts by 3.4%.

Speedo showsActual speed
30 mph31.0 mph
45 mph46.5 mph
60 mph62.0 mph
70 mph72.4 mph
80 mph82.7 mph

Other sizes close to 285/50R22

Questions

Can I replace 285/50R22 with 285/55R22?

285/55R22 is outside the ±3% rule as a replacement for 285/50R22: the diameter differs by +3.38%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 285/50R22 and 285/55R22?

285/55R22 is 1.12" taller and 0 mm wider; the sidewall is +0.56". At an indicated 60 mph you'd actually be doing 62.0 mph.

Will 285/55R22 fit on 285/50R22 wheels?

Both use a 22" rim, so the wheel diameter matches; check the wheel's width range for a 285 mm tire and the fender clearance.