CarSpecsHQ

265/35R22 vs 265/40R22

265/40R22 is outside the ±3% rule as a replacement for 265/35R22: the diameter differs by +3.56%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

22" rim
265/35R22 29.30" · 265/40R22 30.35" · drawn to scale

Side by side

265/35R22265/40R22Difference
Overall diameter29.30"30.35"+1.04" (+3.56%)
Section width265 mm265 mm0 mm
Sidewall3.65"4.17"+0.52"
Rim22"22"same
Circumference92.1"95.3"+3.3"
Revs per mile688665-24
Ride height——+0.52"
Speedometer reads 60 mph60.062.1+2.1 mph

Speedometer and odometer

020406080100120 reads 60 · actual 62.1 mph

With 265/40R22 on a car calibrated for 265/35R22, the speedometer reads 57.9 mph when you're really doing 60, and the odometer under-counts by 3.6%.

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 265/35R22

Questions

Can I replace 265/35R22 with 265/40R22?

265/40R22 is outside the ±3% rule as a replacement for 265/35R22: the diameter differs by +3.56%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.

What's the difference between 265/35R22 and 265/40R22?

265/40R22 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 265/40R22 fit on 265/35R22 wheels?

Both use a 22" rim, so the wheel diameter matches; check the wheel's width range for a 265 mm tire and the fender clearance.