205/60R15 vs 225/50R16
225/50R16 is a safe swap for 205/60R15 by the usual ±3% rule: the diameter differs by +0.70%.
Speedometer and odometer
With 225/50R16 on a car calibrated for 205/60R15, the speedometer reads 59.6 mph when you're really doing 60, and the odometer under-counts by 0.7%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.2 mph |
| 45 mph | 45.3 mph |
| 60 mph | 60.4 mph |
| 70 mph | 70.5 mph |
| 80 mph | 80.6 mph |
Other sizes close to 205/60R15
- 205/60R15 vs 205/55R16+0.78%
- 205/60R15 vs 195/65R15+1.20%
- 205/60R15 vs 205/65R15+3.27%
- 205/60R15 vs 185/65R15-0.88%
- 205/60R15 vs 195/60R15-1.91%
- 205/60R15 vs 185/60R15-3.83%
- 205/60R15 vs 195/55R16-0.97%
- 205/60R15 vs 175/65R15-2.95%
- 205/60R15 vs 195/70R14+0.26%
- 205/60R15 vs 215/60R15+1.91%
- 205/60R15 vs 225/50R15-3.35%
- 205/60R15 vs 245/45R16-0.02%
Questions
Can I replace 205/60R15 with 225/50R16?
225/50R16 is a safe swap for 205/60R15 by the usual ±3% rule: the diameter differs by +0.70%.
What's the difference between 205/60R15 and 225/50R16?
225/50R16 is 0.17" taller and 20 mm wider; the sidewall is -0.41". At an indicated 60 mph you'd actually be doing 60.4 mph.
Will 225/50R16 fit on 205/60R15 wheels?
No — 205/60R15 needs a 15" wheel and 225/50R16 a 16" wheel. This is a plus/minus-size swap that changes wheels too.