245/50R19 vs 275/50R19
275/50R19 is outside the ±3% rule as a replacement for 245/50R19: the diameter differs by +4.12%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
Speedometer and odometer
With 275/50R19 on a car calibrated for 245/50R19, the speedometer reads 57.6 mph when you're really doing 60, and the odometer under-counts by 4.1%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 31.2 mph |
| 45 mph | 46.9 mph |
| 60 mph | 62.5 mph |
| 70 mph | 72.9 mph |
| 80 mph | 83.3 mph |
Other sizes close to 245/50R19
- 245/50R19 vs 235/55R19+1.86%
- 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%
Questions
Can I replace 245/50R19 with 275/50R19?
275/50R19 is outside the ±3% rule as a replacement for 245/50R19: the diameter differs by +4.12%, so the speedometer, odometer and ABS calibration will be off and clearance needs checking.
What's the difference between 245/50R19 and 275/50R19?
275/50R19 is 1.18" taller and 30 mm wider; the sidewall is +0.59". At an indicated 60 mph you'd actually be doing 62.5 mph.
Will 275/50R19 fit on 245/50R19 wheels?
Both use a 19" rim, so the wheel diameter matches; check the wheel's width range for a 275 mm tire and the fender clearance.