265/45R19
265/45R19 is uncommon as OEM fitment but appears as an aftermarket upsize option. At 28.39″ diameter with a 4.69″ sidewall (45% of section width), this size turns 710 revolutions per mile.
About 265/45R19
265/45R19 is less common as a factory fitment but is available as an aftermarket size, so SKU selection is narrower than mainstream OEM sizes. At 28.39″ overall diameter, 265/45R19 turns 710 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 45% aspect ratio gives it a low-profile sidewall that delivers sharp steering response but transmits road imperfections. The 19″ rim pairing is typical for full-size truck, premium SUV, and sport-sedan platforms, so compatible wheels are easy to source new or used. Going one step shorter to 255/45R19 drops diameter by 1.25%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 245/50R19 adds 0.90% diameter — also inside the safe window, with marginally taller ride height. If you are shopping for a direct replacement, any tire within roughly ±0.7″ of the 28.39″ stock diameter (about ±2% in percentage terms) will keep ABS, TPMS, and odometer readings inside the vehicle's designed tolerance.
Compare with another size
275/65R18 or "33" for inch aliases265/45R19
- Diameter
- 28.39″ / 721.1mm
- Section Width
- 10.43″
- Sidewall
- 4.69″ / 119.25mm
- Circumference
- 89.19″
- Revs/Mile
- 710
245/45R19
- Diameter
- 27.68″ / 703.1mm
- Section Width
- 9.65″
- Sidewall
- 4.34″ / 110.25mm
- Circumference
- 86.96″
- Revs/Mile
- 729
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.5 mph (94.15 km/h). Your speedometer reads 2.50% high versus actual speed.