265/50R19
265/50R19 ships as an OEM size on the BMW X5. At 29.43″ diameter with a 5.22″ sidewall (50% of section width), this size turns 685 revolutions per mile.
About 265/50R19
Factory fitments for 265/50R19 include the BMW X5 — meaning replacement tires in this size see steady demand and broad brand availability. At 29.43″ overall diameter, 265/50R19 turns 685 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 50% aspect ratio gives it a moderate sidewall suited to sporty street driving and responsive turn-in. 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 255/50R19 drops diameter by 1.34%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 245/55R19 adds 0.60% 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 29.43″ 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 aliases265/50R19
- Diameter
- 29.43″ / 747.6mm
- Section Width
- 10.43″
- Sidewall
- 5.22″ / 132.5mm
- Circumference
- 92.47″
- Revs/Mile
- 685
245/50R19
- Diameter
- 28.65″ / 727.6mm
- Section Width
- 9.65″
- Sidewall
- 4.82″ / 122.5mm
- Circumference
- 89.99″
- Revs/Mile
- 704
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.39 mph (93.98 km/h). Your speedometer reads 2.68% high versus actual speed.