215/50R17
215/50R17 ships as an OEM size on the Honda Civic. At 25.46″ diameter with a 4.23″ sidewall (50% of section width), this size turns 792 revolutions per mile.
About 215/50R17
Factory fitments for 215/50R17 include the Honda Civic — meaning replacement tires in this size see steady demand and broad brand availability. At 25.46″ overall diameter, 215/50R17 turns 792 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 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 205/50R17 drops diameter by 1.55%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 225/50R17 adds 1.55% 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 25.46″ 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 aliases215/50R17
- Diameter
- 25.46″ / 646.8mm
- Section Width
- 8.46″
- Sidewall
- 4.23″ / 107.5mm
- Circumference
- 80″
- Revs/Mile
- 792
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 57.17 mph (92.01 km/h). Your speedometer reads 4.72% high versus actual speed.