Tires
255/40R21 Tires
Shop 255/40R21 tires for trucks, SUVs, and light-duty pickups. Compare all-season, winter, and all-weather options from top brands with free shipping across the USA.
86 products found
255/40R21 Tires — Buying Guide for American Drivers
255/40R21 is a popular tire size for trucks, SUVs, and light-duty pickups in the USA. You may also see this size written as 255/40R21, 255 40 R21, 255-40-21, or 2554021 — all of those refer to the same tire. When shopping 255/40R21 tires, look for a load index that matches your vehicle's placard rating (typically 91–110 for passenger and light truck applications) and a speed rating of H or V for highway driving. All-season 255/40R21 tires are built for spring, summer, and fall driving when average temperatures stay above 7 °C — they harden in real American winter cold, so they're not a substitute for proper winter rubber. For sub-zero temperatures, snow, and ice you want a dedicated winter tire in 255/40R21 with the Three-Peak Mountain Snowflake (3PMSF) symbol, which is also a legal requirement in Quebec from December 1 to March 15. All-weather 255/40R21 tires split the difference — 3PMSF-certified for winter use but designed to run year-round without a seasonal swap, which is the right call for milder American climates. Filter by season, brand, speed rating, and load index above to find the right 255/40R21 tire for your vehicle. Autrex ships across the USA with free shipping on orders over $99.
255/40R21 reads as a 255 mm tread width, a sidewall 40% as tall as that width, on a 21-inch rim.
We currently list 86 255/40R21 tires available to order, from brands including Pirelli, Michelin, Continental, Bridgestone and Hankook (38 summer, 22 all-season, 19 winter and 3 all-weather).
