21-inch tire sizes
Sizes for 21-inch rims run from 28.0 inches tall (255/35R21) to 31.1 inches (285/45R21).
Each bar is as long as the tire is tall, so you can see which sizes are close. Within one width, a higher second number means a taller sidewall. Open a size for its full measurements, swaps and plus sizes, or see every rim on the tire size chart.
235 mm wide (9.3 in)
255 mm wide (10.0 in)
265 mm wide (10.4 in)
275 mm wide (10.8 in)
285 mm wide (11.2 in)
295 mm wide (11.6 in)
315 mm wide (12.4 in)
21-inch tire questions
Can I put 22-inch tires on 21-inch rims?
No. The last number of the size has to match the rim exactly. To change rim size, choose a size on the new rim with about the same overall height; each size page lists its plus and minus sizes.
What is the tallest 21-inch tire size here?
285/45R21, at 31.1 inches. The shortest is 255/35R21 at 28.0 inches.
Which widths come in 21-inch sizes?
This list covers widths from 235 mm (9.3 in) to 315 mm (12.4 in). Within one width, a lower aspect ratio means a shorter sidewall and a shorter tire.