275/80R22.5 vs 295/75R22.5
Going from one to the other changes the overall height by +0.2 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 275/80R22.5 | 295/75R22.5 | Change |
|---|---|---|---|
| Overall height | 39.8" | 39.9" | +0.2 % |
| Sidewall | 8.66" | 8.71" | +0.6 % |
| Section width | 275 mm | 295 mm | +7.3 % |
| Circumference | 125.1" | 125.4" | +0.2 % |
| Revs per mile | 506 | 505 | -0.2 % |
| Axle height | 19.91" | 19.96" | +1.3 mm |
| Approved rim width | 7.5–10" | 8.5–11" | overlap 8.5–10" |
Both are approved on a rim 8.5" to 10" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 275/80R22.5. Fit 295/75R22.5 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.1 mph | +0.1 |
| 50 mph | 50.1 mph | +0.1 |
| 70 mph | 70.2 mph | +0.2 |
| 90 mph | 90.2 mph | +0.2 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,025 on the road, so it under-counts by 25. At a true 70 mph the first turns 591 times a minute, the second 589.
What drivers reported
275/80R22.5 carries 2 complaints. 295/75R22.5 carries 16.