Best 255/40R21 Tires
Browse best 255/40R21 tires with 11 tire models available from $151.99.
Best 255/40R21 High Performance All-Season Tires
High performance all-season tires offer a good balance of responsive handling, dependable year-round traction and good tread life.
Best 255/40R21 Touring All-Season Tires
Touring all-season tires deliver a nice balance of good year-round traction, smooth ride and longer tread life.
Best 255/40R21 Ultra High Performance All-Season Tires
Ultra high performance all-season tires feature responsive handling, great dry and wet traction, adequate winter traction, decent ride comfort and tread life.
Best 255/40R21 Ultra High Performance Summer Tires
Ultra high performance summer tires are focused on sharp handling on dry and wet roads with good ride quality and tread life. Not designed for winter driving.
255/40R21 Tire Size Fitment
9 vehicles are equipped with 255/40R21 tires as original equipment. Select vehicle model to find best tires that fit.
255/40R21 Tire Size Specifications
255/40R21 is a Metric tire with a section or tread width of 10 inches, wheel diameter of 21 inches, and overall diameter of 29 inches. 255/40R21 tire has a circumference of 91.1 inches, making 695 revolutions per mile.
Overall Diameter: 29"
Tread Width: 10"
Wheel Diameter: 21"
Sidewall Height: 4"
Revolutions per Mile: 695
Replacement Tire Sizes for 255/40R21
255/40R21 tire can be replaced with 25 compatible tire sizes. Select optional plus size to see all available tire models.