245/50R19
245/50R19 ships as an OEM size on the BMW X3, Chevrolet Camaro. At 28.65″ diameter with a 4.82″ sidewall (50% of section width), this size turns 704 revolutions per mile.
About 245/50R19
Factory fitments for 245/50R19 include the BMW X3, Chevrolet Camaro — meaning replacement tires in this size see steady demand and broad brand availability. At 28.65″ overall diameter, 245/50R19 turns 704 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 235/50R19 drops diameter by 1.37%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 225/55R19 adds 0.34% 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 28.65″ 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 aliases245/50R19
- Diameter
- 28.65″ / 727.6mm
- Section Width
- 9.65″
- Sidewall
- 4.82″ / 122.5mm
- Circumference
- 89.99″
- Revs/Mile
- 704
225/55R19
- Diameter
- 28.74″ / 730.1mm
- Section Width
- 8.86″
- Sidewall
- 4.87″ / 123.75mm
- Circumference
- 90.3″
- Revs/Mile
- 702
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 60.21 mph (96.89 km/h). Your speedometer reads 0.34% low versus actual speed.