225/45R18 tires

About 225/45R18 tires

A 225/45R18 is a middle of the road size, and that's meant as a compliment. Enough sidewall to ride well, not so much that the steering goes vague. Whether it works comes down to the wheel it mounts on and how far it lands from the height the car's factory tires stood at.

Tell us the car and the wheel set and you'll only see the 225/45R18 lines that mount and fit.

Common questions

What does 225/45R18 mean?

Width first, then sidewall, then the wheel it goes on. The tread's 225 mm across, and the sidewall is 45 percent of that. The R just means it's a radial, like everything else on the road now. Stood next to a tape it's about 26 inches tall.

Will 225/45R18 fit your car?

Tell us the year, make and model and you'll only see sizes that suit it. The wheel has to be wide enough to carry the tread, and the overall height has to stay near where the car started.

What wheel width fits 225/45R18?

It's a range, not one number. Anything from about 5.5 to 9 inches wide will take it, and every product page shows what that line's maker approves. Pick a wheel set first and the sizes narrow to it.