The Sports Car DOT Radial Wet H20 is Hoosier's Wet Racetrack & Autocross Only tire developed for drivers who participate in autocross and road racing events in moderate to heavy rain.WARNING: DOT labeled Hoosier Racing Tires meet Department of Transportation requirements for marking and performance only and are NOT INTENDED FOR HIGHWAY USE. It is unsafe to operate any Hoosier Racing Tire, including DOT tires, on public roads. The prohibited use of Hoosier Racing Tires on public roadways may result in loss of traction, unexpected loss of vehicle control, or sudden loss of tire pressure, resulting in a vehicle crash and possible injury or death.And like all Wet Racetrack & Autocross Only tires, Radial Wet H2O radials are not intended to be driven in near-freezing temperatures, through snow or on ice. It's also essential these tires be stored indoors at temperatures maintained above 32 degrees F.Sports Car DOT - Radial Wet H20 tires feature an aromatic oil-free wet weather tread compound that offers traction for fast and consistent lap times in wet track conditions, along with improved treadwear and durability in damp to drying track conditions. This compound is molded into a directional tread design featuring a combination of circumferential and "Y-shaped" lateral tread grooves. Through the initial portion of their life (between their beginning tread depth of 8/32-inch and approximately 4/32-inch of remaining tread depth), the walls of the tread grooves taper as the tires wear. Through the remainder of their tread depth (between 4/32-inch tread depth and worn out), the walls are molded vertically. This allows the tires to serve as full wet tires when used at their original 8/32-inch tread depth, or intermediate wet tires when shaved or worn to approximately 4/32-inch of remaining tread depth due to the reduced tread squirm and increased footprint contact area.Sports Car DOT - Radial Wet H20 tires have a symmetric internal construction and directional tread design that allow them to be mounted for use on either side of the car. The tire's internal structure features a three-ply nylon cord radial casing reinforced by two fiberglass belts and a spirally wound circumferential nylon cap ply under the tread. Related Information: Competition Tire Heat Cycling Service | Shaving Tires for Autocross / Track Use / Competition | Storing Track & Competition DOT Tires in Cold Temperatures