Hoosier Racing Tire Sports Car DOT A7 Radials are Racetrack & Autocross Only tires developed for drivers who compete in autocross, time trial and hillclimb events in dry conditions where responsiveness and high levels of grip at lower operating temperatures are desirable. A7 Radials are also used for road racing on lightweight cars or when competing in cool ambient temperatures where Hoosier Sports Car DOT R6 Radials cannot be brought up to favorable operating temperatures.

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, A7 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 A7 Radials incorporate a new tread compound designed to extend wear and useable heat cycles, as well as experience less "fall-off" during a long run and less degradation over the life of the tire (compared to A6 tires). The tread compound is molded into a slick tread design interrupted only by five-dash circumferentially oriented grooves alternating outboard and inboard. Beginning with a tread depth of 4/32", they will not require shaving for competition, however they will benefit from a minimal scuff-in prior to their first runs.

The tire's internal structure features a symmetric construction that uses two lightweight steel belts reinforced by a spirally wrapped circumferential nylon cap ply under the tread on top of two nylon cord casing plies. It features a rim recess design on all sizes. Additionally, 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 A7 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.

Hoosier Racing Tire Sports Car DOT Radial R7 tires are Racetrack & Autocross Only tires developed for drivers who compete in road racing where responsiveness and high levels of grip in hot, dry conditions are desirable. Radial R7 tires are designed to reward drivers with fast, consistent lap times and extended wear due to their traction and handling.

NOTE: Radial A7 tires are also used for road racing on lightweight cars or when competing in cool ambient temperatures where Hoosier Sports Car DOT Radial R7 tires cannot be brought up to favorable operating temperatures.

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, R7 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.

The tread compound of Sports Car DOT R7 Radials is molded into a slick tread design interrupted only by five-dash circumferentially oriented grooves alternating outboard and inboard. Beginning with a tread depth of 4/32", they will not require shaving for competition, however they will benefit from a minimal scuff-in prior to their first runs.

The tire's internal structure features a symmetric construction that uses two lightweight steel belts reinforced by a spirally wrapped circumferential nylon cap ply under the tread on top of two nylon cord casing plies. It features a rim recess design on all sizes. Additionally, 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 R7 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.

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.

The D.O.T. Drag Radial is Hoosier's Drag Racing Radial tire developed for drag racers that compete in sanctioned events at local strips. D.O.T. Drag Radials feature Hoosier's race-proven technology and compounds, making them ideal for competition classes that require street-legal tires.

Now offering a choice of tire sidewall styling treatments, the Hoosier logo is crisply painted in solid white letters on one sidewall of D.O.T. Drag Radial tires for competitors who want to proudly proclaim their tire choice to fellow drag racers and fans.

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 Drag Racing Radial tires, D.O.T. Drag 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 40 degrees F.

D.O.T. Drag Radials feature a special tread compound molded into a "slick" tread design featuring two symmetric circumferential tread grooves. Beginning with just 4.5/32" tread depth, they are ready for competition after being scuffed-in. The tire's symmetric internal construction features nylon cord casing plies reinforced by two lightweight steel belts and spirally wrapped nylon reinforcement under the tread.

Hoosier's burnout procedure for most cars recommends rolling through the water box to wet the tires. Start the burnout. However, once the tires begin to "haze", slow the burnout and proceed to the start line. The burnout's goal is to clean all debris off the tires and heat just the surface of the tread. Since most wear to the tread life of a drag tire comes from too much time in the burnout procedure, shorten the burnout time in the water box if you feel you are getting too much wear.

The D.O.T. Drag Radial's symmetric tread design and internal construction allows them to be installed on either side of the car. Hoosier suggests swapping tires from side-to-side on a regular basis to help smooth out and/or even treadwear. Side-to-side swapping also allows tires to run in both directions, thus causing the tire to wear differently, which helps clean up the tread. The tread surface should have a fine grain or velvet look.

The useful life of a tire, whether mounted or dismounted, is directly affected by storage conditions. Tires should always be stored indoors in a dark, cool, dry room. Remove the tires from the vehicle. Release the air pressure and lay the tires on their sides. Maintain the temperature range in the storage location between 40-90 degrees Fahrenheit. Don't store tires in sub-freezing temperatures for any length of time, as it will cause the rubber to freeze and possible crack.

The D.O.T. Drag Radial 2 is Hoosier's redesigned Drag Racing Radial tire developed for drag racers that compete in sanctioned events at local strips. D.O.T. Drag Radials feature Hoosier's race-proven technology and compounds, making them ideal for competition classes that require street-legal tires.

WARNING: D.O.T. 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 other Track & Competition DOT tires, these tires are not intended to be stored, serviced or driven in near- or below freezing temperatures, through snow or on ice.

D.O.T. Drag Radial 2 tires feature a special tread compound molded into a slick tread design interrupted only by five-dash circumferentially oriented grooves alternating outboard and inboard. Beginning with a molded tread depth of just 4/32", they are ready for competition after being scuffed-in. The tire features an improved tread profile to help deliver the best performance results. Its internal structure features symmetric nylon cord casing plies reinforced by two lightweight belts and spirally wrapped nylon reinforcement under the tread.

Hoosier's burnout procedure for most cars recommends rolling through the water box to wet the tires. Start the burnout. However once the tires begin to "haze", slow the burnout and proceed to the start line. The burnout's goal is to clean all debris off the tires and heat just the surface of the tread. Since most wear to the treadlife of a drag tire comes from too much time in the burnout procedure, shorten burnout time in the water box if you feel you are getting too much wear.

The D.O.T. Drag Radial 2's symmetric tread design and internal construction allows them to be installed on either side of the car. Hoosier suggests swapping tires from side-to-side on a regular basis to help smooth out and/or even treadwear. Side-to-side swapping also allows tires to run in both directions, thus causing the tire to wear differently, which helps clean up the tread. The tread surface should have a fine grain or velvet look.

The useful life of a tire, whether mounted or dismounted, is directly affected by storage conditions. Tires should always be stored indoors in a dark, cool, dry room. Remove the tires from the vehicle. Release the air pressure and lay the tires on their sides. Maintain the temperature range in the storage location between 40-90 degrees Fahrenheit. Don't store tires in sub-freezing temperatures for any length of time, as it will cause the rubber to freeze and possibly crack.