Hoosier Racing Tire Sports Car D.O.T. A6
Radials are Track & Competition DOT tires developed for drivers who
compete in autocross, time trial and hillclimb events in dry
conditions where providing responsiveness and high levels of grip at
lower operating temperatures is desirable. The A6 Radials are
designed to give the driver significant performance advantages over
previous A3S05 tires in autocross competition.
The A6 Radials feature an improved tread compound molded into a
"slick" tread design featuring two symmetric "Formula One" style
circumferential tread grooves. A more rounded tread profile extends
the life of the shoulders and produces more consistent tread wear
across the entire contact patch. The A6 radials feature a revised
symmetric internal construction that uses nylon cord radial carcass
plies reinforced by two lightweight steel belts and a spirally
wrapped circumferential nylon cap ply under the tread. The tires
feature a "rim recess" design on all sizes.
Hoosier Racing Tire's extensive testing has shown the A6 Radials
produce crisper steering response and improved transitional
performance. Their improved tread compound delivers more consistent
run times over longer exposure to heat and less degradation of grip
after several runs. Their new internal construction provides
increased overall grip and greater stability at the tire's higher
limits of adhesion, allowing the driver to apply more power with
confidence. The new A6 Radial has also shown better overall wear due
to the improved tread profile and the increase in overall grip.
Additionally, their symmetric tread design allows them to be mounted
on either side of the car (and later be remounted inside out to
further extend their life).
Hoosier Racing Tire's testing has also shown performance will be
improved by using lower operating pressures compared to A3S05 tires.
Hoosier advises competitors to lower air pressures in small
increments to find optimum air pressure for their specific vehicle.
Beginning with a tread depth of 4.5/32", they will not require
shaving for competition, however they will benefit from a minimal
scuff-in prior to their first runs.
NOTE: While the A6 Radials have an inflated shape with relatively
round shoulders to complement camber-challenged cars, they still
benefit from vehicle alignments that offer significant negative
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 possibly injury or death.
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