205/45R19 vs 225/45R19
Going from one to the other changes the overall height by +2.7 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 205/45R19 | 225/45R19 | Change |
|---|---|---|---|
| Overall height | 26.3" | 27.0" | +2.7 % |
| Sidewall | 3.63" | 3.99" | +9.8 % |
| Section width | 205 mm | 225 mm | +9.8 % |
| Circumference | 82.5" | 84.7" | +2.7 % |
| Revs per mile | 768 | 748 | -2.7 % |
| Axle height | 13.13" | 13.49" | +9.0 mm |
| Approved rim width | 5.5–7.5" | 6–8.5" | overlap 6–7.5" |
Both are approved on a rim 6" to 7.5" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 205/45R19. Fit 225/45R19 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.8 mph | +0.8 |
| 50 mph | 51.3 mph | +1.3 |
| 70 mph | 71.9 mph | +1.9 |
| 90 mph | 92.4 mph | +2.4 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,270 on the road, so it under-counts by 270. At a true 70 mph the first turns 896 times a minute, the second 872.
What drivers reported
Nobody has filed a complaint naming 205/45R19. 225/45R19 carries 1.