265/45R22 vs 285/45R22
Going from one to the other changes the overall height by +2.3 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 265/45R22 | 285/45R22 | Change |
|---|---|---|---|
| Overall height | 31.4" | 32.1" | +2.3 % |
| Sidewall | 4.69" | 5.05" | +7.5 % |
| Section width | 265 mm | 285 mm | +7.5 % |
| Circumference | 98.6" | 100.8" | +2.3 % |
| Revs per mile | 643 | 628 | -2.3 % |
| Axle height | 15.69" | 16.05" | +9.0 mm |
| Approved rim width | 7.5–9.5" | 8–10.5" | overlap 8–9.5" |
Both are approved on a rim 8" 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 265/45R22. Fit 285/45R22 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.7 mph | +0.7 |
| 50 mph | 51.1 mph | +1.1 |
| 70 mph | 71.6 mph | +1.6 |
| 90 mph | 92.0 mph | +2.0 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,226 on the road, so it under-counts by 226. At a true 70 mph the first turns 750 times a minute, the second 733.
What drivers reported
Nobody has filed a complaint naming 265/45R22. 285/45R22 carries 6.