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.
Related Information: Care and Feeding of the Hoosier A7/R7 (PDF) | Competition Tire Heat Cycling Service | Storing Track & Competition DOT Tires in Cold Temperatures
There are many ways for enthusiasts to compete. Autocross, track events, and time trials are just some of the ways drivers can test their mettle. When cross-competing, events don’t stop because of the rain, so is there a single tire that stands out across the board? In this test, the finale of our 2025 Extreme Performance/Track & Competition evaluations, we set out to answer that question.
Read the Full Test Report
(59)Tire Category: Racetrack & Autocross Only
| Best in Category |
| Miles Reported |
| Recommended |
| Treadwear |
Hoosier A7
|
|---|
| 78% |
| 102K |
| 9.0 - Excellent |
| 2.5 - Unacceptable |
|
|
| 9.8 - Excellent |
|
|
| N/A |
|
|
| 7.2 - Good |
|
|
| 6.3 - Fair |
Customers think the Hoosier A7 delivers outstanding dry traction, with autocrossers and track drivers praising its "glue-like" grip, precise turn-in, and consistent performance across heat cycles. Many report shaving seconds off lap times and achieving podium finishes, noting improved durability over previous Hoosier models when properly managed with camber adjustments and tire flipping. Wet traction receives mixed feedback-adequate in light rain but prone to hydroplaning in standing water, though most users avoid wet conditions entirely given the tire's competition focus. Treadwear concerns emerge with reports of cording after 45-80 runs depending on driving style and maintenance, though some achieve multiple seasons through careful heat cycle management. While price is a frequent pain point, enthusiasts argue the performance gains justify the cost for serious competitors.
AI-generated from the text of customer reviews
There are many ways for enthusiasts to compete. Autocross, track events, and time trials are just some of the ways drivers can test their mettle. When cross-competing, events don’t stop because of the rain, so is there a single tire that stands out across the board? In this test, the finale of our 2025 Extreme Performance/Track & Competition evaluations, we set out to answer that question.
Read the Full Test Report
The demands track drivers have of Racetrack & Autocross Only tires can vary as much as the tire options themselves, so what better way to test than to run them on a dedicated road course? Of the six in this test, we have one tried and true staple in the R-Comp world, two newcomers, two popular choices, and a full, non-DOT-approved full racing slick. Leaving no stone unturned, or maybe no corner unturned, this test gives racers the information to make the best choice for their needs. Check it out!
Read the Full Test Report
Testing Extreme Performance Summer, Streetable Track & Competition, and Racetrack & Autocross Only tires means returning to GingerMan Raceway for head-to-head testing. This year, a whopping 19 tires took part in this portion of the test to find out one thing: which are the fastest track and streetable track tires. Also included this year is a full racing slick, a Tire Rack first!
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