225/50R16 vs 215/55R16
215/55R16 is a safe swap for 225/50R16 by the usual ±3% rule: the diameter differs by +1.82%.
Speedometer and odometer
With 215/55R16 on a car calibrated for 225/50R16, the speedometer reads 58.9 mph when you're really doing 60, and the odometer under-counts by 1.8%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.5 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 225/50R16
- 225/50R16 vs 225/45R17+0.46%
- 225/50R16 vs 205/55R16+0.08%
- 225/50R16 vs 215/45R17-0.97%
- 225/50R16 vs 205/50R17+0.86%
- 225/50R16 vs 205/60R16+3.33%
- 225/50R16 vs 195/65R15+0.49%
- 225/50R16 vs 245/40R17-0.57%
- 225/50R16 vs 255/40R17+0.70%
- 225/50R16 vs 195/55R16-1.66%
- 225/50R16 vs 205/50R16-3.17%
- 225/50R16 vs 225/55R16+3.56%
- 225/50R16 vs 195/50R16-4.75%
Questions
Can I replace 225/50R16 with 215/55R16?
215/55R16 is a safe swap for 225/50R16 by the usual ±3% rule: the diameter differs by +1.82%.
What's the difference between 225/50R16 and 215/55R16?
215/55R16 is 0.45" taller and 10 mm narrower; the sidewall is +0.23". At an indicated 60 mph you'd actually be doing 61.1 mph.
Will 215/55R16 fit on 225/50R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 215 mm tire and the fender clearance.