205/50R15 vs 195/55R15
195/55R15 is a safe swap for 205/50R15 by the usual ±3% rule: the diameter differs by +1.62%.
Speedometer and odometer
With 195/55R15 on a car calibrated for 205/50R15, the speedometer reads 59.0 mph when you're really doing 60, and the odometer under-counts by 1.6%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.5 mph |
| 45 mph | 45.7 mph |
| 60 mph | 61.0 mph |
| 70 mph | 71.1 mph |
| 80 mph | 81.3 mph |
Other sizes close to 205/50R15
- 205/50R15 vs 185/60R15+2.90%
- 205/50R15 vs 195/60R15+4.95%
- 205/50R15 vs 175/65R15+3.84%
- 205/50R15 vs 185/55R15-0.26%
- 205/50R15 vs 205/45R16+0.84%
- 205/50R15 vs 175/65R14-0.49%
- 205/50R15 vs 225/45R15-0.43%
- 205/50R15 vs 195/50R15-1.71%
- 205/50R15 vs 225/50R15+3.41%
- 205/50R15 vs 195/60R14+0.61%
- 205/50R15 vs 245/40R15-1.54%
Questions
Can I replace 205/50R15 with 195/55R15?
195/55R15 is a safe swap for 205/50R15 by the usual ±3% rule: the diameter differs by +1.62%.
What's the difference between 205/50R15 and 195/55R15?
195/55R15 is 0.37" taller and 10 mm narrower; the sidewall is +0.19". At an indicated 60 mph you'd actually be doing 61.0 mph.
Will 195/55R15 fit on 205/50R15 wheels?
Both use a 15" rim, so the wheel diameter matches; check the wheel's width range for a 195 mm tire and the fender clearance.