225/40R18 tires

About 225/40R18 tires

A 225/40R18 is 225 mm wide with a 90 mm sidewall (40 series) on an 18 inch wheel, 25.1 inches tall overall. A tire size only makes sense next to a wheel width and a car. 225/40R18 mounts on a range of widths, and the overall height decides whether the speedometer and the fender stay happy.

53 lines carry 225/40R18, from 15 brands (Continental Tire, Falken, Nitto, Michelin and 11 more). By type that is 33 all season and 15 performance summer. The tire has to stay near your car's stock height and mount on your wheel width, so pick the car and the wheel set and the page keeps only the 225/40R18 lines that do both.

Common questions

What does 225/40R18 mean?

225 is the section width in millimeters, 40 is the sidewall height as a percent of that width (90 mm here), R means radial and 18 is the wheel diameter in inches. Overall the tire stands 25.1 inches tall.

Will 225/40R18 fit your car?

Pick your year, make and model and the tires page answers it for yours. The wheel width has to carry the section width and the overall height has to stay near where the car started.

What wheel width fits 225/40R18?

The tire makers list 5.5 to 9 inch rim widths across the 225 mm sizes we carry, and each product page shows the range for that line. Pick an 18 inch wheel set and the tire step checks the width for you.