CarSpecsHQ

265/35R22 vs 315/30R22

315/30R22 is a safe swap for 265/35R22 by the usual ±3% rule: the diameter differs by +0.47%.

22" rim
265/35R22 29.30" · 315/30R22 29.44" · drawn to scale

Side by side

265/35R22315/30R22Difference
Overall diameter29.30"29.44"+0.14" (+0.47%)
Section width265 mm315 mm+50 mm
Sidewall3.65"3.72"+0.07"
Rim22"22"same
Circumference92.1"92.5"+0.4"
Revs per mile688685-3
Ride height——+0.07"
Speedometer reads 60 mph60.060.3+0.3 mph

Speedometer and odometer

020406080100120 reads 60 · actual 60.3 mph

With 315/30R22 on a car calibrated for 265/35R22, the speedometer reads 59.7 mph when you're really doing 60, and the odometer under-counts by 0.5%.

Speedo showsActual speed
30 mph30.1 mph
45 mph45.2 mph
60 mph60.3 mph
70 mph70.3 mph
80 mph80.4 mph

Other sizes close to 265/35R22

Questions

Can I replace 265/35R22 with 315/30R22?

315/30R22 is a safe swap for 265/35R22 by the usual ±3% rule: the diameter differs by +0.47%.

What's the difference between 265/35R22 and 315/30R22?

315/30R22 is 0.14" taller and 50 mm wider; the sidewall is +0.07". At an indicated 60 mph you'd actually be doing 60.3 mph.

Will 315/30R22 fit on 265/35R22 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.