195/55R16 vs 185/65R15
185/65R15 is a safe swap for 195/55R16 by the usual ±3% rule: the diameter differs by +0.10%.
Speedometer and odometer
With 185/65R15 on a car calibrated for 195/55R16, the speedometer reads 59.9 mph when you're really doing 60, and the odometer under-counts by 0.1%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.0 mph |
| 45 mph | 45.0 mph |
| 60 mph | 60.1 mph |
| 70 mph | 70.1 mph |
| 80 mph | 80.1 mph |
Other sizes close to 195/55R16
- 195/55R16 vs 205/55R16+1.77%
- 195/55R16 vs 215/45R17+0.71%
- 195/55R16 vs 215/55R16+3.54%
- 195/55R16 vs 205/45R17-0.74%
- 195/55R16 vs 195/60R15-0.95%
- 195/55R16 vs 225/50R16+1.69%
- 195/55R16 vs 205/50R16-1.53%
- 195/55R16 vs 195/50R16-3.14%
- 195/55R16 vs 205/60R15+0.98%
- 195/55R16 vs 185/55R16-1.77%
- 195/55R16 vs 205/45R16-4.83%
- 195/55R16 vs 235/40R17-0.18%
Questions
Can I replace 195/55R16 with 185/65R15?
185/65R15 is a safe swap for 195/55R16 by the usual ±3% rule: the diameter differs by +0.10%.
What's the difference between 195/55R16 and 185/65R15?
185/65R15 is 0.02" taller and 10 mm narrower; the sidewall is +0.51". At an indicated 60 mph you'd actually be doing 60.1 mph.
Will 185/65R15 fit on 195/55R16 wheels?
No — 195/55R16 needs a 16" wheel and 185/65R15 a 15" wheel. This is a plus/minus-size swap that changes wheels too.