CarSpecsHQ

265/40R22 vs 315/35R22

315/35R22 is a safe swap for 265/40R22 by the usual ±3% rule: the diameter differs by +1.10%.

22" rim
265/40R22 30.35" · 315/35R22 30.68" · drawn to scale

Side by side

265/40R22315/35R22Difference
Overall diameter30.35"30.68"+0.33" (+1.10%)
Section width265 mm315 mm+50 mm
Sidewall4.17"4.34"+0.17"
Rim22"22"same
Circumference95.3"96.4"+1.1"
Revs per mile665657-7
Ride height——+0.17"
Speedometer reads 60 mph60.060.7+0.7 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.7 mph

With 315/35R22 on a car calibrated for 265/40R22, the speedometer reads 59.3 mph when you're really doing 60, and the odometer under-counts by 1.1%.

Speedo showsActual speed
30 mph30.3 mph
45 mph45.5 mph
60 mph60.7 mph
70 mph70.8 mph
80 mph80.9 mph

Other sizes close to 265/40R22

Questions

Can I replace 265/40R22 with 315/35R22?

315/35R22 is a safe swap for 265/40R22 by the usual ±3% rule: the diameter differs by +1.10%.

What's the difference between 265/40R22 and 315/35R22?

315/35R22 is 0.33" taller and 50 mm wider; the sidewall is +0.17". At an indicated 60 mph you'd actually be doing 60.7 mph.

Will 315/35R22 fit on 265/40R22 wheels?

Both use a 22" rim, so the wheel diameter matches; check the wheel's width range for a 315 mm tire and the fender clearance.