295/35R18 vs 235/50R17
235/50R17 is a safe swap for 295/35R18 by the usual ±3% rule: the diameter differs by +0.47%.
Speedometer and odometer
With 235/50R17 on a car calibrated for 295/35R18, the speedometer reads 59.7 mph when you're really doing 60, and the odometer under-counts by 0.5%.
| Speedo shows | Actual speed |
|---|---|
| 30 mph | 30.1 mph |
| 45 mph | 45.2 mph |
| 60 mph | 60.3 mph |
| 70 mph | 70.3 mph |
| 80 mph | 80.4 mph |
Other sizes close to 295/35R18
- 295/35R18 vs 225/45R18-0.60%
- 295/35R18 vs 245/40R18-1.58%
- 295/35R18 vs 225/40R18-3.99%
- 295/35R18 vs 245/45R18+2.11%
- 295/35R18 vs 235/50R18+4.29%
- 295/35R18 vs 235/45R18+0.75%
- 295/35R18 vs 215/55R17+0.69%
- 295/35R18 vs 235/40R18-2.79%
- 295/35R18 vs 225/50R18+2.79%
- 295/35R18 vs 255/35R19-0.39%
- 295/35R18 vs 255/35R18-4.22%
- 295/35R18 vs 255/40R18-0.38%
Questions
Can I replace 295/35R18 with 235/50R17?
235/50R17 is a safe swap for 295/35R18 by the usual ±3% rule: the diameter differs by +0.47%.
What's the difference between 295/35R18 and 235/50R17?
235/50R17 is 0.12" taller and 60 mm narrower; the sidewall is +0.56". At an indicated 60 mph you'd actually be doing 60.3 mph.
Will 235/50R17 fit on 295/35R18 wheels?
No — 295/35R18 needs a 18" wheel and 235/50R17 a 17" wheel. This is a plus/minus-size swap that changes wheels too.