295/35R22 vs 275/40R22

Q: Can I replace 295/35R22 with 275/40R22?

275/40R22 is a safe swap for 295/35R22 by the usual ±3% rule: the diameter differs by +1.76%.

275/40R22 is a safe swap for 295/35R22 by the usual ±3% rule: the diameter differs by +1.76%.

295/35R22 30.13" · 275/40R22 30.66" · drawn to scale

Side by side

	295/35R22	275/40R22	Difference
Overall diameter	30.13"	30.66"	+0.53" (+1.76%)
Section width	295 mm	275 mm	-20 mm
Sidewall	4.06"	4.33"	+0.27"
Rim	22"	22"	same
Circumference	94.7"	96.3"	+1.7"
Revs per mile	669	658	-12
Ride height	—	—	+0.27"
Speedometer reads 60 mph	60.0	61.1	+1.1 mph

Speedometer and odometer

With 275/40R22 on a car calibrated for 295/35R22, the speedometer reads 59.0 mph when you're really doing 60, and the odometer under-counts by 1.8%.

Speedo shows	Actual speed
30 mph	30.5 mph
45 mph	45.8 mph
60 mph	61.1 mph
70 mph	71.2 mph
80 mph	81.4 mph

Other sizes close to 295/35R22

Questions

Can I replace 295/35R22 with 275/40R22?

275/40R22 is a safe swap for 295/35R22 by the usual ±3% rule: the diameter differs by +1.76%.

What's the difference between 295/35R22 and 275/40R22?

275/40R22 is 0.53" taller and 20 mm narrower; the sidewall is +0.27". At an indicated 60 mph you'd actually be doing 61.1 mph.

Will 275/40R22 fit on 295/35R22 wheels?

Both use a 22" rim, so the wheel diameter matches; check the wheel's width range for a 275 mm tire and the fender clearance.