215/55R16 vs 245/50R16
245/50R16 is a safe swap for 215/55R16 by the usual ±3% rule: the diameter differs by +1.32%.
Speedometer and odometer
With 245/50R16 on a car calibrated for 215/55R16, the speedometer reads 59.2 mph when you're really doing 60, and the odometer under-counts by 1.3%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.4 mph |
| 45 mph | 45.6 mph |
| 60 mph | 60.8 mph |
| 70 mph | 70.9 mph |
| 80 mph | 81.1 mph |
Other sizes close to 215/55R16
- 215/55R16 vs 205/55R16-1.71%
- 215/55R16 vs 205/50R17-0.95%
- 215/55R16 vs 215/50R17+0.61%
- 215/55R16 vs 235/45R17+0.06%
- 215/55R16 vs 215/60R16+3.34%
- 215/55R16 vs 205/60R16+1.48%
- 215/55R16 vs 205/65R16+4.67%
- 215/55R16 vs 205/65R15+0.72%
- 215/55R16 vs 195/55R16-3.42%
- 215/55R16 vs 225/50R16-1.79%
- 215/55R16 vs 205/50R16-4.90%
- 215/55R16 vs 225/55R16+1.71%
Questions
Can I replace 215/55R16 with 245/50R16?
245/50R16 is a safe swap for 215/55R16 by the usual ±3% rule: the diameter differs by +1.32%.
What's the difference between 215/55R16 and 245/50R16?
245/50R16 is 0.33" taller and 30 mm wider; the sidewall is +0.17". At an indicated 60 mph you'd actually be doing 60.8 mph.
Will 245/50R16 fit on 215/55R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 245 mm tire and the fender clearance.