235/55R19 vs 245/55R19
245/55R19 is a safe swap for 235/55R19 by the usual ±3% rule: the diameter differs by +1.48%.
Speedometer and odometer
With 245/55R19 on a car calibrated for 235/55R19, the speedometer reads 59.1 mph when you're really doing 60, and the odometer under-counts by 1.5%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.4 mph |
| 45 mph | 45.7 mph |
| 60 mph | 60.9 mph |
| 70 mph | 71.0 mph |
| 80 mph | 81.2 mph |
Other sizes close to 235/55R19
- 235/55R19 vs 235/60R18-0.26%
- 235/55R19 vs 255/45R20-0.49%
- 235/55R19 vs 255/50R19-0.47%
- 235/55R19 vs 255/55R18-0.46%
- 235/55R19 vs 255/45R19-3.91%
- 235/55R19 vs 225/55R19-1.48%
- 235/55R19 vs 235/50R19-3.17%
- 235/55R19 vs 255/55R19+2.97%
- 235/55R19 vs 265/45R20+0.73%
- 235/55R19 vs 265/50R19+0.88%
- 235/55R19 vs 245/50R19-1.82%
- 235/55R19 vs 295/40R20+0.39%
Questions
Can I replace 235/55R19 with 245/55R19?
245/55R19 is a safe swap for 235/55R19 by the usual ±3% rule: the diameter differs by +1.48%.
What's the difference between 235/55R19 and 245/55R19?
245/55R19 is 0.43" taller and 10 mm wider; the sidewall is +0.22". At an indicated 60 mph you'd actually be doing 60.9 mph.
Will 245/55R19 fit on 235/55R19 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.