225/45R17
225/45R17 ships as an OEM size on the Hyundai Elantra, Kia Forte, Lexus IS. At 24.97″ diameter with a 3.99″ sidewall (45% of section width), this size turns 808 revolutions per mile.
About 225/45R17
Factory fitments for 225/45R17 include the Hyundai Elantra, Kia Forte, Lexus IS — meaning replacement tires in this size see steady demand and broad brand availability. At 24.97″ overall diameter, 225/45R17 turns 808 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 17″ rim pairing is typical for light-truck, crossover, and mid-size SUV applications, so compatible wheels are easy to source new or used. Going one step shorter to 215/45R17 drops diameter by 1.42%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 205/50R17 adds 0.39% 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 24.97″ 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 aliases225/45R17
- Diameter
- 24.97″ / 634.3mm
- Section Width
- 8.86″
- Sidewall
- 3.99″ / 101.25mm
- Circumference
- 78.45″
- Revs/Mile
- 808
205/45R17
- Diameter
- 24.26″ / 616.3mm
- Section Width
- 8.07″
- Sidewall
- 3.63″ / 92.25mm
- Circumference
- 76.23″
- Revs/Mile
- 831
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 58.3 mph (93.82 km/h). Your speedometer reads 2.84% high versus actual speed.