Like all Diamond Back Classics, their AS4 is an especially good-looking radial tire, but it’s most important feature of the AS4 is that it’s one of the most highly-rated tires available for high-performance and specialty cars.The Diamond Back AS4 is a Touring Class, high-performance radial that comes in 24 matching-tread sizes. It’s available in 60, 65, and 70 series, and can be ordered as a whitewall or redline.
The AS4 carries a set of ratings that set it apart from other whitewall and redline tires. For one, it’s rated for 44 psi—an especially important feature, because radials perform so much better at higher pressures. It’s also T-rated for continuous running at 118 mph, with an A-rating for temperature resistance and an A-rating for traction. These features, alol in one tire, are what make the AS4 so ideally-suited for high performance and specialty cars where performance and safety are very important.Typical of Diamond Back tires, the AS4 features a non-aggressive tread for an especially smooth and quite ride, with a design that lets water escape to help prevent hydroplaning and loss of control on a water-covered road. Diamond Back specializes in creating custom tires-to-order with any sidewall treatment you need for a classic or muscle car. Their free catalog describes everything, and even shows you their process. Call them toll-free at (888) 922-1642, or visit them on the web at www.dbtires.com. Diamond Back Classics, 4753 Hwy 90, Conway, South Carolina 29526