285/50R22 vs 285/55R22

285/55R22 is 1.1" taller than 285/50R22 (3.4%)

Diameter difference+3.38%diameter 33.22" → 34.34"
285/50R22285/55R22
285/50R22285/55R22Difference
Overall diameter33.22"34.34"+1.12"
Section width11.22"11.22"±0.00"
Sidewall height5.61"6.17"+0.56"
Circumference104.4"107.9"+3.5"
Revolutions per mile607587−20
Wheel diameter22"22"±0"

Speedometer

ShowsActualDiff
30 mph31.0 mph+1.0
45 mph46.5 mph+1.5
60 mph62.0 mph+2.0
70 mph72.4 mph+2.4
80 mph82.7 mph+2.7

Gear ratio to match

CurrentEquivalent
3.423.54
3.553.67
3.733.86
4.104.24

285/55R22 is 1.12" taller than 285/50R22, a +3.38% change in diameter. That is more than the 3% many tire shops use as a limit, so plan on recalibrating the speedometer and checking ABS and stability control.

Ground clearance changes by 0.56" (half the diameter change), and the tire needs 0.56" more room above it.

Both tires are the same width, 11.22".

Both fit a 22" wheel; the sidewall is 0.56" taller on 285/55R22.

Details: 285/50R22 in inches · 285/55R22 in inches · change sizes in the calculator

FAQ

What is the difference between 285/50R22 and 285/55R22?

285/55R22 is 1.12" taller (+3.38%) and 0.00" wider than 285/50R22.

Will 285/55R22 change my speedometer?

Yes, by +3.38%. When the speedometer shows 60 mph you would be going 62.0 mph.

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

It is a +3.4% diameter change, larger than the common 3% guideline, so check clearance and plan to recalibrate.