CarSpecsHQ

265/30R19 vs 275/35R19

275/35R19 is outside the ±3% rule as a replacement for 265/30R19: the diameter differs by +5.22%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

19" rim
265/30R19 25.26" · 275/35R19 26.58" · drawn to scale

Side by side

265/30R19275/35R19Difference
Overall diameter25.26"26.58"+1.32" (+5.22%)
Section width265 mm275 mm+10 mm
Sidewall3.13"3.79"+0.66"
Rim19"19"same
Circumference79.4"83.5"+4.1"
Revs per mile798759-40
Ride height——+0.66"
Speedometer reads 60 mph60.063.1+3.1 mph

Speedometer and odometer

020406080100120 reads 60 · actual 63.1 mph

With 275/35R19 on a car calibrated for 265/30R19, the speedometer reads 57.0 mph when you're really doing 60, and the odometer under-counts by 5.2%.

Speedo showsActual speed
30 mph31.6 mph
45 mph47.3 mph
60 mph63.1 mph
70 mph73.7 mph
80 mph84.2 mph

Other sizes close to 265/30R19

Questions

Can I replace 265/30R19 with 275/35R19?

275/35R19 is outside the ±3% rule as a replacement for 265/30R19: the diameter differs by +5.22%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 265/30R19 and 275/35R19?

275/35R19 is 1.32" taller and 10 mm wider; the sidewall is +0.66". At an indicated 60 mph you'd actually be doing 63.1 mph.

Will 275/35R19 fit on 265/30R19 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.