CarSpecsHQ

265/50R19 vs 275/55R19

275/55R19 is outside the ±3% rule as a replacement for 265/50R19: the diameter differs by +5.02%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

19" rim
265/50R19 29.43" · 275/55R19 30.91" · drawn to scale

Side by side

265/50R19275/55R19Difference
Overall diameter29.43"30.91"+1.48" (+5.02%)
Section width265 mm275 mm+10 mm
Sidewall5.22"5.95"+0.74"
Rim19"19"same
Circumference92.5"97.1"+4.6"
Revs per mile685652-33
Ride height——+0.74"
Speedometer reads 60 mph60.063.0+3.0 mph

Speedometer and odometer

020406080100120 reads 60 · actual 63.0 mph

With 275/55R19 on a car calibrated for 265/50R19, the speedometer reads 57.1 mph when you're really doing 60, and the odometer under-counts by 5.0%.

Speedo showsActual speed
30 mph31.5 mph
45 mph47.3 mph
60 mph63.0 mph
70 mph73.5 mph
80 mph84.0 mph

Other sizes close to 265/50R19

Questions

Can I replace 265/50R19 with 275/55R19?

275/55R19 is outside the ±3% rule as a replacement for 265/50R19: the diameter differs by +5.02%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 265/50R19 and 275/55R19?

275/55R19 is 1.48" taller and 10 mm wider; the sidewall is +0.74". At an indicated 60 mph you'd actually be doing 63.0 mph.

Will 275/55R19 fit on 265/50R19 wheels?

Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 275 mm tire and the fender clearance.