245/50R19 vs 265/50R19
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 | 245/50R19 | 265/50R19 | Change |
|---|---|---|---|
| Overall height | 28.6" | 29.4" | +2.7 % |
| Sidewall | 4.82" | 5.22" | +8.2 % |
| Section width | 245 mm | 265 mm | +8.2 % |
| Circumference | 90.0" | 92.5" | +2.7 % |
| Revs per mile | 704 | 685 | -2.7 % |
| Axle height | 14.32" | 14.72" | +10.0 mm |
| Approved rim width | 7–9" | 7.5–9.5" | overlap 7.5–9" |
Both are approved on a rim 7.5" to 9" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 245/50R19. Fit 265/50R19 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.8 mph | +0.8 |
| 50 mph | 51.4 mph | +1.4 |
| 70 mph | 71.9 mph | +1.9 |
| 90 mph | 92.5 mph | +2.5 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,275 on the road, so it under-counts by 275. At a true 70 mph the first turns 821 times a minute, the second 799.
What drivers reported
Nobody has filed a complaint naming 245/50R19. 265/50R19 carries 2.