355/40R22 vs 335/45R22
Going from one to the other changes the overall height by +2.1 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 355/40R22 | 335/45R22 | Change |
|---|---|---|---|
| Overall height | 33.2" | 33.9" | +2.1 % |
| Sidewall | 5.59" | 5.94" | +6.2 % |
| Section width | 355 mm | 335 mm | -5.6 % |
| Circumference | 104.2" | 106.4" | +2.1 % |
| Revs per mile | 608 | 595 | -2.1 % |
| Axle height | 16.59" | 16.94" | +8.8 mm |
| Approved rim width | 10–13" | 9.5–12.5" | overlap 10–12.5" |
Both are approved on a rim 10" to 12.5" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 355/40R22. Fit 335/45R22 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.6 mph | +0.6 |
| 50 mph | 51.0 mph | +1.0 |
| 70 mph | 71.5 mph | +1.5 |
| 90 mph | 91.9 mph | +1.9 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,208 on the road, so it under-counts by 208. At a true 70 mph the first turns 709 times a minute, the second 695.