275/30R22 vs 265/35R22
Going from one to the other changes the overall height by +2.8 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 275/30R22 | 265/35R22 | Change |
|---|---|---|---|
| Overall height | 28.5" | 29.3" | +2.8 % |
| Sidewall | 3.25" | 3.65" | +12.4 % |
| Section width | 275 mm | 265 mm | -3.6 % |
| Circumference | 89.5" | 92.1" | +2.8 % |
| Revs per mile | 708 | 688 | -2.8 % |
| Axle height | 14.25" | 14.65" | +10.3 mm |
| Approved rim width | 7.5–10" | 7.5–9.5" | overlap 7.5–9.5" |
Both are approved on a rim 7.5" to 9.5" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 275/30R22. Fit 265/35R22 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.8 mph | +0.8 |
| 50 mph | 51.4 mph | +1.4 |
| 70 mph | 72.0 mph | +2.0 |
| 90 mph | 92.5 mph | +2.5 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,283 on the road, so it under-counts by 283. At a true 70 mph the first turns 826 times a minute, the second 803.
What drivers reported
Nobody has filed a complaint naming 275/30R22. 265/35R22 carries 8.