CarSpecsHQ

295/25R22 vs 285/30R22

285/30R22 is outside the ±3% rule as a replacement for 295/25R22: the diameter differs by +3.33%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

22" rim
295/25R22 27.81" · 285/30R22 28.73" · drawn to scale

Side by side

295/25R22285/30R22Difference
Overall diameter27.81"28.73"+0.93" (+3.33%)
Section width295 mm285 mm-10 mm
Sidewall2.90"3.37"+0.46"
Rim22"22"same
Circumference87.4"90.3"+2.9"
Revs per mile725702-23
Ride height——+0.46"
Speedometer reads 60 mph60.062.0+2.0 mph

Speedometer and odometer

020406080100120 reads 60 · actual 62.0 mph

With 285/30R22 on a car calibrated for 295/25R22, the speedometer reads 58.1 mph when you're really doing 60, and the odometer under-counts by 3.3%.

Speedo showsActual speed
30 mph31.0 mph
45 mph46.5 mph
60 mph62.0 mph
70 mph72.3 mph
80 mph82.7 mph

Other sizes close to 295/25R22

Questions

Can I replace 295/25R22 with 285/30R22?

285/30R22 is outside the ±3% rule as a replacement for 295/25R22: the diameter differs by +3.33%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 295/25R22 and 285/30R22?

285/30R22 is 0.93" taller and 10 mm narrower; the sidewall is +0.46". At an indicated 60 mph you'd actually be doing 62.0 mph.

Will 285/30R22 fit on 295/25R22 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.