245/50R19 vs 235/55R19
235/55R19 is a safe swap for 245/50R19 by the usual ±3% rule: the diameter differs by +1.86%.
Speedometer and odometer
With 235/55R19 on a car calibrated for 245/50R19, the speedometer reads 58.9 mph when you're really doing 60, and the odometer under-counts by 1.9%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.6 mph |
| 45 mph | 45.8 mph |
| 60 mph | 61.1 mph |
| 70 mph | 71.3 mph |
| 80 mph | 81.5 mph |
Other sizes close to 245/50R19
- 245/50R19 vs 245/45R19-3.37%
- 245/50R19 vs 225/60R18-0.05%
- 245/50R19 vs 245/45R20+0.12%
- 245/50R19 vs 255/50R19+1.37%
- 245/50R19 vs 275/40R20+0.05%
- 245/50R19 vs 255/45R19-2.13%
- 245/50R19 vs 225/55R19+0.34%
- 245/50R19 vs 275/40R19-3.44%
- 245/50R19 vs 235/50R19-1.37%
- 245/50R19 vs 245/55R19+3.37%
- 245/50R19 vs 255/55R19+4.88%
- 245/50R19 vs 235/45R19-4.60%
Questions
Can I replace 245/50R19 with 235/55R19?
235/55R19 is a safe swap for 245/50R19 by the usual ±3% rule: the diameter differs by +1.86%.
What's the difference between 245/50R19 and 235/55R19?
235/55R19 is 0.53" taller and 10 mm narrower; the sidewall is +0.27". At an indicated 60 mph you'd actually be doing 61.1 mph.
Will 235/55R19 fit on 245/50R19 wheels?
Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 235 mm tire and the fender clearance.