CarSpecsHQ

265/50R19 vs 265/55R19

265/55R19 is outside the ±3% rule as a replacement for 265/50R19: the diameter differs by +3.54%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

19" rim
265/50R19 29.43" · 265/55R19 30.48" · drawn to scale

Side by side

265/50R19265/55R19Difference
Overall diameter29.43"30.48"+1.04" (+3.54%)
Section width265 mm265 mm0 mm
Sidewall5.22"5.74"+0.52"
Rim19"19"same
Circumference92.5"95.7"+3.3"
Revs per mile685662-23
Ride height——+0.52"
Speedometer reads 60 mph60.062.1+2.1 mph

Speedometer and odometer

020406080100120 reads 60 · actual 62.1 mph

With 265/55R19 on a car calibrated for 265/50R19, the speedometer reads 57.9 mph when you're really doing 60, and the odometer under-counts by 3.5%.

Speedo showsActual speed
30 mph31.1 mph
45 mph46.6 mph
60 mph62.1 mph
70 mph72.5 mph
80 mph82.8 mph

Other sizes close to 265/50R19

Questions

Can I replace 265/50R19 with 265/55R19?

265/55R19 is outside the ±3% rule as a replacement for 265/50R19: the diameter differs by +3.54%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 265/50R19 and 265/55R19?

265/55R19 is 1.04" taller and 0 mm wider; the sidewall is +0.52". At an indicated 60 mph you'd actually be doing 62.1 mph.

Will 265/55R19 fit on 265/50R19 wheels?

Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 265 mm tire and the fender clearance.