235/45R19
235/45R19 ships as an OEM size on the Acura TLX, Toyota Camry. At 27.33″ diameter with a 4.16″ sidewall (45% of section width), this size turns 738 revolutions per mile.
About 235/45R19
Factory fitments for 235/45R19 include the Acura TLX, Toyota Camry — meaning replacement tires in this size see steady demand and broad brand availability. At 27.33″ overall diameter, 235/45R19 turns 738 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 255/40R19 drops diameter by 1.08%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 245/45R19 adds 1.30% 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 27.33″ 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 aliases235/45R19
- Diameter
- 27.33″ / 694.1mm
- Section Width
- 9.25″
- Sidewall
- 4.16″ / 105.75mm
- Circumference
- 85.85″
- Revs/Mile
- 738
225/40R19
- Diameter
- 26.09″ / 662.6mm
- Section Width
- 8.86″
- Sidewall
- 3.54″ / 90mm
- Circumference
- 81.95″
- Revs/Mile
- 773
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 57.28 mph (92.18 km/h). Your speedometer reads 4.54% high versus actual speed.