335/60R24 vs 355/55R24
Going from one to the other changes the overall height by -1.1 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 335/60R24 | 355/55R24 | Change |
|---|---|---|---|
| Overall height | 39.8" | 39.4" | -1.1 % |
| Sidewall | 7.91" | 7.69" | -2.9 % |
| Section width | 335 mm | 355 mm | +6.0 % |
| Circumference | 125.1" | 123.7" | -1.1 % |
| Revs per mile | 506 | 512 | +1.1 % |
| Axle height | 19.91" | 19.69" | -5.8 mm |
| Approved rim width | 9.5–12.5" | 10–13" | 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 335/60R24. Fit 355/55R24 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 29.7 mph | -0.3 |
| 50 mph | 49.4 mph | -0.6 |
| 70 mph | 69.2 mph | -0.8 |
| 90 mph | 89.0 mph | -1.0 |
The odometer drifts with it. Ten thousand miles on the dial are really 9,886 on the road, so it over-counts by 114. At a true 70 mph the first turns 591 times a minute, the second 598.