295/40R19 vs 245/55R19
245/55R19 is outside the ±3% rule as a replacement for 295/40R19: the diameter differs by +4.66%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 245/55R19 on a car calibrated for 295/40R19, the speedometer reads 57.3 mph when you're really doing 60, and the odometer under-counts by 4.7%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.4 mph |
| 45 mph | 47.1 mph |
| 60 mph | 62.8 mph |
| 70 mph | 73.3 mph |
| 80 mph | 83.7 mph |
Other sizes close to 295/40R19
- 295/40R19 vs 235/55R19+3.13%
- 295/40R19 vs 235/55R18-0.40%
- 295/40R19 vs 245/45R19-2.16%
- 295/40R19 vs 255/50R19+2.64%
- 295/40R19 vs 255/40R19-4.45%
- 295/40R19 vs 255/45R19-0.90%
- 295/40R19 vs 225/55R19+1.60%
- 295/40R19 vs 275/40R19-2.23%
- 295/40R19 vs 255/40R20-0.92%
- 295/40R19 vs 225/45R19-4.66%
- 295/40R19 vs 235/50R19-0.14%
- 295/40R19 vs 235/45R19-3.41%
Questions
Can I replace 295/40R19 with 245/55R19?
245/55R19 is outside the ±3% rule as a replacement for 295/40R19: the diameter differs by +4.66%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 295/40R19 and 245/55R19?
245/55R19 is 1.32" taller and 50 mm narrower; the sidewall is +0.66". At an indicated 60 mph you'd actually be doing 62.8 mph.
Will 245/55R19 fit on 295/40R19 wheels?
Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 245 mm tire and the fender clearance.