Tire size comparison
245/35R19 vs 265/35R19
Overall diameter, sidewall, revs per mile, and speedometer error — 265/35R19 is the taller tire, with a 2.1% speedo delta when swapping.
245/35R19
25.75in
654 mm overall diameter
265/35R19
26.3in
668 mm overall diameter
Diameter Δ
0.55 in
Speedo error
2.1%
245/35R19 revs/mi
783
265/35R19 revs/mi
767
Within the ±3% overall-diameter band usually considered safe for plus-sizing — speedometer and ABS calibration should stay close to factory.
Full spec
Side by side
| Metric | 245/35R19 | 265/35R19 |
|---|---|---|
| Section width | 245 mm | 265 mm |
| Aspect ratio | 35 | 35 |
| Wheel diameter | 19″ | 19″ |
| Sidewall height | 86 mm | 93 mm |
| Overall diameter | 25.75 in (654 mm) | 26.3 in (668 mm) |
| Circumference | 80.9 in | 82.63 in |
| Revolutions / mile | 783 | 767 |
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FAQ
Frequently asked
- What is the diameter difference between 245/35R19 and 265/35R19?
- 245/35R19 has an overall diameter of 25.75 inches (654 mm). 265/35R19 is 26.3 inches (668 mm). That's a 0.55 inch (14 mm) difference — 265/35R19 is taller.
- Will 265/35R19 cause speedometer error on a car fitted with 245/35R19?
- Swapping 245/35R19 for 265/35R19 produces a speedometer error of about 2.1%. Your speedometer will read lower than your actual speed — a 60 mph indicated reading is really 61.3 mph. Anything under 3% is usually acceptable without recalibration.
- How many revolutions per mile does each size do?
- 245/35R19 turns 783 revs per mile. 265/35R19 turns 767 revs per mile. Taller tyres turn fewer times per mile, which lowers effective final-drive ratio.
- What's the sidewall height difference?
- 245/35R19 has a sidewall of 86 mm (3.38 in). 265/35R19 sidewall is 93 mm (3.65 in). Lower-profile sidewalls give sharper steering response but less bump compliance.
- Is 265/35R19 a safe plus-size upgrade from 245/35R19?
- A plus-size upgrade is considered safe when overall diameter stays within ±3% — here the difference is 2.1%. This swap is within the typical safe range; speedometer and ABS calibration should remain close to factory.
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