295/70R17 vs 325/60R18
325/60R18 is a safe swap for 295/70R17 by the usual ±3% rule: the diameter differs by +0.28%.
Speedometer and odometer
With 325/60R18 on a car calibrated for 295/70R17, the speedometer reads 59.8 mph when you're really doing 60, and the odometer under-counts by 0.3%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.1 mph |
| 45 mph | 45.1 mph |
| 60 mph | 60.2 mph |
| 70 mph | 70.2 mph |
| 80 mph | 80.2 mph |
Other sizes close to 295/70R17
- 295/70R17 vs 265/70R17-4.97%
- 295/70R17 vs 275/70R18-0.31%
- 295/70R17 vs 285/70R17-1.66%
- 295/70R17 vs 235/80R17-4.38%
- 295/70R17 vs 315/70R17+3.31%
- 295/70R17 vs 255/75R17-3.61%
- 295/70R17 vs 33x12.50R18-0.78%
- 295/70R17 vs 285/75R17+1.72%
- 295/70R17 vs 33x12.50R17-0.78%
- 295/70R17 vs 275/70R17-3.31%
- 295/70R17 vs 255/80R17-0.59%
- 295/70R17 vs 305/70R17+1.66%
Questions
Can I replace 295/70R17 with 325/60R18?
325/60R18 is a safe swap for 295/70R17 by the usual ±3% rule: the diameter differs by +0.28%.
What's the difference between 295/70R17 and 325/60R18?
325/60R18 is 0.09" taller and 30 mm wider; the sidewall is -0.45". At an indicated 60 mph you'd actually be doing 60.2 mph.
Will 325/60R18 fit on 295/70R17 wheels?
No — 295/70R17 needs a 17" wheel and 325/60R18 a 18" wheel. This is a plus/minus-size swap that changes wheels too.