295/35R22 vs 305/40R22
305/40R22 is outside the ±3% rule as a replacement for 295/35R22: the diameter differs by +4.90%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 305/40R22 on a car calibrated for 295/35R22, the speedometer reads 57.2 mph when you're really doing 60, and the odometer under-counts by 4.9%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.5 mph |
| 45 mph | 47.2 mph |
| 60 mph | 62.9 mph |
| 70 mph | 73.4 mph |
| 80 mph | 83.9 mph |
Other sizes close to 295/35R22
- 295/35R22 vs 275/40R22+1.76%
- 295/35R22 vs 265/40R22+0.72%
- 295/35R22 vs 265/35R22-2.74%
- 295/35R22 vs 285/35R22-0.91%
- 295/35R22 vs 285/40R22+2.81%
- 295/35R22 vs 295/40R21+0.54%
- 295/35R22 vs 285/40R21-0.51%
- 295/35R22 vs 265/45R21+0.86%
- 295/35R22 vs 275/35R22-1.83%
- 295/35R22 vs 315/35R22+1.83%
- 295/35R22 vs 325/35R22+2.74%
- 295/35R22 vs 285/30R22-4.64%
Questions
Can I replace 295/35R22 with 305/40R22?
305/40R22 is outside the ±3% rule as a replacement for 295/35R22: the diameter differs by +4.90%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 295/35R22 and 305/40R22?
305/40R22 is 1.48" taller and 10 mm wider; the sidewall is +0.74". At an indicated 60 mph you'd actually be doing 62.9 mph.
Will 305/40R22 fit on 295/35R22 wheels?
Both use a 22" rim, so the wheel diameter matches; check the wheel's width range for a 305 mm tire and the fender clearance.