315/60R17 vs 335/60R17
Going from one to the other changes the overall height by +3.0 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 315/60R17 | 335/60R17 | Change |
|---|---|---|---|
| Overall height | 31.9" | 32.8" | +3.0 % |
| Sidewall | 7.44" | 7.91" | +6.3 % |
| Section width | 315 mm | 335 mm | +6.3 % |
| Circumference | 100.2" | 103.1" | +3.0 % |
| Revs per mile | 633 | 614 | -3.0 % |
| Axle height | 15.94" | 16.41" | +12.0 mm |
| Approved rim width | 8.5–11.5" | 9.5–12.5" | overlap 9.5–11.5" |
Both are approved on a rim 9.5" to 11.5" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 315/60R17. Fit 335/60R17 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.9 mph | +0.9 |
| 50 mph | 51.5 mph | +1.5 |
| 70 mph | 72.1 mph | +2.1 |
| 90 mph | 92.7 mph | +2.7 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,296 on the road, so it under-counts by 296. At a true 70 mph the first turns 738 times a minute, the second 717.
What drivers reported
Nobody has filed a complaint naming 315/60R17. 335/60R17 carries 2.