355/55R22 vs 335/60R22
Going from one to the other changes the overall height by +1.2 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 355/55R22 | 335/60R22 | Change |
|---|---|---|---|
| Overall height | 37.4" | 37.8" | +1.2 % |
| Sidewall | 7.69" | 7.91" | +2.9 % |
| Section width | 355 mm | 335 mm | -5.6 % |
| Circumference | 117.4" | 118.8" | +1.2 % |
| Revs per mile | 540 | 533 | -1.2 % |
| Axle height | 18.69" | 18.91" | +5.8 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 355/55R22. Fit 335/60R22 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.4 mph | +0.4 |
| 50 mph | 50.6 mph | +0.6 |
| 70 mph | 70.8 mph | +0.8 |
| 90 mph | 91.1 mph | +1.1 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,121 on the road, so it under-counts by 121. At a true 70 mph the first turns 630 times a minute, the second 622.