275/30R21 tires
5 tire lines. 275/30R21 tires sized to your wheels and your car.
About 275/30R21 tires
A 275/30R21 is a short sidewall size. It steers sharp, it finds every seam in the road, and it's what a big wheel needs to stay near stock height. A tire size only means something next to a wheel width and a car, because the wheel decides what'll mount and the car decides what'll fit.
Tell us the car and the wheel set and you'll only see the 275/30R21 lines that mount and fit.
Common questions
- What does 275/30R21 mean?
- Width first, then sidewall, then the wheel it goes on. The tread's 275 mm across, and the sidewall is 30 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 27.5 inches tall.
- Will 275/30R21 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 275/30R21?
- It's a range, not one number. Anything from about 7 to 11 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.




