295/35R22 vs 295/40R21
295/40R21 is a safe swap for 295/35R22 by the usual ±3% rule: the diameter differs by +0.54%.
Speedometer and odometer
With 295/40R21 on a car calibrated for 295/35R22, 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 | 30.2 mph |
| 45 mph | 45.2 mph |
| 60 mph | 60.3 mph |
| 70 mph | 70.4 mph |
| 80 mph | 80.4 mph |
Other sizes close to 295/35R22
- 295/35R22 vs 275/40R22+1.76%
- 295/35R22 vs 265/40R22+0.72%
- 295/35R22 vs 265/35R22-2.74%
- 295/35R22 vs 285/35R22-0.91%
- 295/35R22 vs 285/40R22+2.81%
- 295/35R22 vs 285/40R21-0.51%
- 295/35R22 vs 265/45R21+0.86%
- 295/35R22 vs 275/35R22-1.83%
- 295/35R22 vs 305/40R22+4.90%
- 295/35R22 vs 315/35R22+1.83%
- 295/35R22 vs 325/35R22+2.74%
- 295/35R22 vs 285/30R22-4.64%
Questions
Can I replace 295/35R22 with 295/40R21?
295/40R21 is a safe swap for 295/35R22 by the usual ±3% rule: the diameter differs by +0.54%.
What's the difference between 295/35R22 and 295/40R21?
295/40R21 is 0.16" taller and 0 mm wider; the sidewall is +0.58". At an indicated 60 mph you'd actually be doing 60.3 mph.
Will 295/40R21 fit on 295/35R22 wheels?
No — 295/35R22 needs a 22" wheel and 295/40R21 a 21" wheel. This is a plus/minus-size swap that changes wheels too.