The Hoosier Track Attack R Race R8 tires are Racetrack & Autocross Only tires, developed for competitors in road racing who prioritize sharp responsiveness and elevated grip in hot, dry conditions. They are engineered to provide drivers with fast, repeatable lap times with minimal fall-off, and enhanced durability through superior traction and precise handling.
Note: The R8 compound is designed to be a harder, more heat-tolerant formula for consistency and durability on the track. The A8 compound is a medium hardness formula designed for fast warm up and ultimate grip for autocross and hill climb applications, or for cold days and lower horsepower cars that struggle to get the R compound up to competitive operating temperature.
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 Racetrack & Autocross Only tires, Track Attack R Race R8 tires 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.
The tread compound of the Track Attack R Race R8 is molded into a near-slick pattern interrupted only by minimal, dash-style grooves oriented circumferentially for DOT compliance. Starting at an initial tread depth of 4/32", these tires require no shaving prior to competition use, though a brief scuff-in period before initial runs will help optimize performance.
The tire's internal structure features a symmetric construction that uses two lightweight steel belts reinforced by a spirally wrapped triple-ply circumferential polyamide cap under the tread on top of four polyamide casing plies. Its symmetric tread design and internal construction allows the tire to be mounted on either side of the car (and later be remounted inside out to further extend its life).
Because of the way tires are manufactured, taking measurements of unmounted tires does not provide an accurate comparison. Hoosier DOT-radials typically have very generous unmounted dimensions, so be sure to mount on appropriate-width wheels before making any judgment related to physical size.
The section width, tread width and shoulder profile of the Track Attack R Race R8 may differ from those of its predecessor, affecting the clearance between the tire and suspension components and/or body panels. If the intended application is an aggressive fitment with close tolerances, it is recommended to test fit a mounted, inflated tire to check for potential contact between the tire and vehicle before driving on the tires.
Related Information: What Is Competition Tire Heat Cycling?
| How Do I Store Track & Competition DOT Tires In Cold Temperatures?
| Care and Feeding of the Hoosier Track Attack R Race A8/R8 (PDF
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