225/55R18

About 225/55R18

Factory fitments for 225/55R18 include the Ford Maverick, Honda HR-V, Jeep Compass, Mitsubishi Eclipse Cross — meaning replacement tires in this size see steady demand and broad brand availability. At 27.74″ overall diameter, 225/55R18 turns 727 revolutions per mile, which is the reference point the factory speedometer and odometer were calibrated against. The 55% aspect ratio gives it a moderate sidewall suited to sporty street driving and responsive turn-in. The 18″ 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 215/55R18 drops diameter by 1.56%, which stays within the ±3% fitment safe zone for most vehicles. Stepping up to 215/60R18 adds 1.49% 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 27.74″ stock diameter (about ±2% in percentage terms) will keep ABS, TPMS, and odometer readings inside the vehicle's designed tolerance.

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