What does 315/35R21 mean?

315 is the section width in millimeters, 35 is the sidewall height as a percent of that width (110 mm here), R means radial and 21 is the wheel diameter in inches. Overall the tire stands 29.7 inches tall.

Will 315/35R21 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 315/35R21?

The tire makers list 8 to 12.5 inch rim widths across the 315 mm sizes we carry, and each product page shows the range for that line. Pick a 21 inch wheel set and the tire step checks the width for you.

315/35R21 tires

6 tire lines. 315/35R21 tires sized to your wheels and your car.

About 315/35R21 tires

A 315/35R21 is 315 mm wide with a 110 mm sidewall (35 series) on a 21 inch wheel, 29.7 inches tall overall. A tire size only makes sense next to a wheel width and a car. 315/35R21 mounts on a range of widths, and the overall height decides whether the speedometer and the fender stay happy.

6 lines carry 315/35R21, from 4 brands (Pirelli, Continental Tire, Kumho and Michelin). By type that is 4 performance summer and 2 all season. 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 315/35R21 lines that do both.

Common questions

What does 315/35R21 mean?: 315 is the section width in millimeters, 35 is the sidewall height as a percent of that width (110 mm here), R means radial and 21 is the wheel diameter in inches. Overall the tire stands 29.7 inches tall.
Will 315/35R21 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 315/35R21?: The tire makers list 8 to 12.5 inch rim widths across the 315 mm sizes we carry, and each product page shows the range for that line. Pick a 21 inch wheel set and the tire step checks the width for you.