225/35R19 vs 245/35R19
Going from one to the other changes the overall height by +2.2 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 225/35R19 | 245/35R19 | Change |
|---|---|---|---|
| Overall height | 25.2" | 25.8" | +2.2 % |
| Sidewall | 3.10" | 3.38" | +8.9 % |
| Section width | 225 mm | 245 mm | +8.9 % |
| Circumference | 79.2" | 80.9" | +2.2 % |
| Revs per mile | 800 | 783 | -2.2 % |
| Axle height | 12.60" | 12.88" | +7.0 mm |
| Approved rim width | 6–8.5" | 7–9" | overlap 7–8.5" |
Both are approved on a rim 7" to 8.5" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 225/35R19. Fit 245/35R19 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 | 71.5 mph | +1.5 |
| 90 mph | 92.0 mph | +2.0 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,219 on the road, so it under-counts by 219. At a true 70 mph the first turns 934 times a minute, the second 914.
What drivers reported
Nobody has filed a complaint naming 225/35R19. 245/35R19 carries 4.