295/40R19 vs 255/50R19
255/50R19 is a safe swap for 295/40R19 by the usual ±3% rule: the diameter differs by +2.64%.
Speedometer and odometer
With 255/50R19 on a car calibrated for 295/40R19, the speedometer reads 58.5 mph when you're really doing 60, and the odometer under-counts by 2.6%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.8 mph |
| 45 mph | 46.2 mph |
| 60 mph | 61.6 mph |
| 70 mph | 71.9 mph |
| 80 mph | 82.1 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 255/40R19-4.45%
- 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 245/55R19+4.66%
- 295/40R19 vs 235/45R19-3.41%
Questions
Can I replace 295/40R19 with 255/50R19?
255/50R19 is a safe swap for 295/40R19 by the usual ±3% rule: the diameter differs by +2.64%.
What's the difference between 295/40R19 and 255/50R19?
255/50R19 is 0.75" taller and 40 mm narrower; the sidewall is +0.37". At an indicated 60 mph you'd actually be doing 61.6 mph.
Will 255/50R19 fit on 295/40R19 wheels?
Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 255 mm tire and the fender clearance.