275/35R19 vs 295/30R19
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 | 275/35R19 | 295/30R19 | Change |
|---|---|---|---|
| Overall height | 26.6" | 26.0" | -2.3 % |
| Sidewall | 3.79" | 3.48" | -8.1 % |
| Section width | 275 mm | 295 mm | +7.3 % |
| Circumference | 83.5" | 81.6" | -2.3 % |
| Revs per mile | 759 | 777 | +2.3 % |
| Axle height | 13.29" | 12.98" | -7.8 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 275/35R19. Fit 295/30R19 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 29.3 mph | -0.7 |
| 50 mph | 48.9 mph | -1.1 |
| 70 mph | 68.4 mph | -1.6 |
| 90 mph | 87.9 mph | -2.1 |
The odometer drifts with it. Ten thousand miles on the dial are really 9,770 on the road, so it over-counts by 230. At a true 70 mph the first turns 885 times a minute, the second 906.
What drivers reported
275/35R19 carries 4 complaints. Nobody has filed one naming 295/30R19.