265/35R22 vs 255/40R22
255/40R22 is a safe swap for 265/35R22 by the usual ±3% rule: the diameter differs by +2.49%.
Speedometer and odometer
With 255/40R22 on a car calibrated for 265/35R22, the speedometer reads 58.5 mph when you're really doing 60, and the odometer under-counts by 2.5%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.7 mph |
| 45 mph | 46.1 mph |
| 60 mph | 61.5 mph |
| 70 mph | 71.7 mph |
| 80 mph | 82.0 mph |
Other sizes close to 265/35R22
- 265/35R22 vs 265/40R21+0.15%
- 265/35R22 vs 295/35R21-0.59%
- 265/35R22 vs 275/40R22+4.64%
- 265/35R22 vs 265/40R22+3.56%
- 265/35R22 vs 255/40R21-0.93%
- 265/35R22 vs 285/35R22+1.88%
- 265/35R22 vs 275/35R22+0.94%
- 265/35R22 vs 295/35R22+2.82%
- 265/35R22 vs 315/35R22+4.70%
- 265/35R22 vs 285/30R22-1.95%
- 265/35R22 vs 295/30R22-1.14%
- 265/35R22 vs 315/30R22+0.47%
Questions
Can I replace 265/35R22 with 255/40R22?
255/40R22 is a safe swap for 265/35R22 by the usual ±3% rule: the diameter differs by +2.49%.
What's the difference between 265/35R22 and 255/40R22?
255/40R22 is 0.73" taller and 10 mm narrower; the sidewall is +0.36". At an indicated 60 mph you'd actually be doing 61.5 mph.
Will 255/40R22 fit on 265/35R22 wheels?
Both use a 22" rim, so the wheel diameter matches; check the wheel's width range for a 255 mm tire and the fender clearance.