305/40R18 tires
1 tire line. 305/40R18 tires sized to your wheels and your car.
About 305/40R18 tires
A 305/40R18 is the kind of size that comes with a big wheel. The sidewall is short, so the steering gets crisper and you'll hear every pothole. 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 305/40R18 lines that mount and fit.
Common questions
- What does 305/40R18 mean?
- Width first, then sidewall, then the wheel it goes on. The tread's 305 mm across, and the sidewall is 40 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 27.6 inches tall.
- Will 305/40R18 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 305/40R18?
- It's a range, not one number. Anything from about 7 to 12 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.