265/30R19
265/30R19 ships as an OEM size on the Acura Integra, Honda Civic. At 25.26″ diameter with a 3.13″ sidewall (30% of section width), this size turns 798 revolutions per mile.
About 265/30R19
Factory fitments for 265/30R19 include the Acura Integra, Honda Civic — meaning replacement tires in this size see steady demand and broad brand availability. At 25.26″ overall diameter, 265/30R19 turns 798 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 30% aspect ratio gives it an ultra-low-profile sidewall tuned for maximum steering precision — at the cost of ride comfort and rim protection. 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. Stepping up to 245/35R19 adds 1.95% 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 25.26″ 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 aliases265/30R19
- Diameter
- 25.26″ / 641.6mm
- Section Width
- 10.43″
- Sidewall
- 3.13″ / 79.5mm
- Circumference
- 79.36″
- Revs/Mile
- 798
245/35R19
- Diameter
- 25.75″ / 654.1mm
- Section Width
- 9.65″
- Sidewall
- 3.38″ / 85.75mm
- Circumference
- 80.9″
- Revs/Mile
- 783
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 61.17 mph (98.44 km/h). Your speedometer reads 1.95% low versus actual speed.