215/45R19 vs 225/45R19
Going from one to the other changes the overall height by +1.3 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 215/45R19 | 225/45R19 | Change |
|---|---|---|---|
| Overall height | 26.6" | 27.0" | +1.3 % |
| Sidewall | 3.81" | 3.99" | +4.7 % |
| Section width | 215 mm | 225 mm | +4.7 % |
| Circumference | 83.6" | 84.7" | +1.3 % |
| Revs per mile | 758 | 748 | -1.3 % |
| Axle height | 13.31" | 13.49" | +4.5 mm |
| Approved rim width | 6–8" | 6–8.5" | overlap 6–8" |
Both are approved on a rim 6" to 8" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 215/45R19. Fit 225/45R19 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.4 mph | +0.4 |
| 50 mph | 50.7 mph | +0.7 |
| 70 mph | 70.9 mph | +0.9 |
| 90 mph | 91.2 mph | +1.2 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,133 on the road, so it under-counts by 133. At a true 70 mph the first turns 884 times a minute, the second 872.
What drivers reported
Nobody has filed a complaint naming 215/45R19. 225/45R19 carries 1.