225/55R16 vs 205/65R16
205/65R16 is a safe swap for 225/55R16 by the usual ±3% rule: the diameter differs by +2.91%.
Speedometer and odometer
With 205/65R16 on a car calibrated for 225/55R16, the speedometer reads 58.3 mph when you're really doing 60, and the odometer under-counts by 2.9%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.9 mph |
| 45 mph | 46.3 mph |
| 60 mph | 61.7 mph |
| 70 mph | 72.0 mph |
| 80 mph | 82.3 mph |
Other sizes close to 225/55R16
- 225/55R16 vs 225/50R17+0.44%
- 225/55R16 vs 205/55R16-3.36%
- 225/55R16 vs 245/45R17-0.24%
- 225/55R16 vs 215/55R16-1.68%
- 225/55R16 vs 215/65R16+4.89%
- 225/55R16 vs 215/60R16+1.61%
- 225/55R16 vs 205/60R16-0.23%
- 225/55R16 vs 225/60R16+3.44%
- 225/55R16 vs 205/65R15-0.98%
- 225/55R16 vs 225/50R16-3.44%
- 225/55R16 vs 205/55R17+0.52%
- 225/55R16 vs 275/40R17-0.32%
Questions
Can I replace 225/55R16 with 205/65R16?
205/65R16 is a safe swap for 225/55R16 by the usual ±3% rule: the diameter differs by +2.91%.
What's the difference between 225/55R16 and 205/65R16?
205/65R16 is 0.75" taller and 20 mm narrower; the sidewall is +0.37". At an indicated 60 mph you'd actually be doing 61.7 mph.
Will 205/65R16 fit on 225/55R16 wheels?
Both use a 16" rim, so the wheel diameter matches; check the wheel's width range for a 205 mm tire and the fender clearance.