H-Lug: off-the-road, loader tire. Features: L4 tread design, but with a deeper undertread, such that the depth of the tread and undertread together is equal to that of a typical L5 tire; deeper undertread improves cut-resistance and tire life; tire can be safely operated after original tread has worn off.
Size: 55.5/80-57, 68 ply rating.
ZR1: light truck, touring radial.
Features: all-season tread design with characteristics for improved tread wear, traction and handling; outline white letters.
Sizes: six S-rated P-metric sizes; eight LT sizes with Q and N speed ratings.
Firehawk GTA: passenger, all-season performance radial.
Features: H speed rating; asymmetric tread design-large outside shoulder blocks enhance cornering, while smaller inner blocks and circumferential grooves provide wet and snow traction; two steel belts with a spiral-wrapped nylon layer over the belt edges; computer-developed tread noise treatment; 40,000-mile treadwear warranty.
Sizes: 14 55-, 60-, 65- and 70-series sizes to fit in 14- to 17-inch rim diameters.
Available to dealers in April, the Firehawk GTA has been used as original equipment for four years on Saturn cars, and for two years on the Ford F-150 lightning.
A special promotion during May will tie in to Firestone's return to Indy Car racing. Customers who purchase a set of four Firehawk GTAs that month will receive an exact 1/24th scale replica of Firestone's test car, a Ford-Cosworth-powered Lola T93/00.
HR-26: truck, precure tread for drive-axle radials.
Features: 26/32-inch-deep tread with aggressive design for high mileage and all-weather traction; available in Hercules' regular and SPR tread compounds.
Sizes: No. 8 and No. 9.