Although many companies manufacture tires in U.S. factories, as of 2014, only a few American-owned tire manufacturers remain: Cooper Tires, Titan Tires, Denman Tires, Goodyear and Kelly Springfield. Of these, Kelly Springfield is owned by Goodyear, while Titan Tires owns and produces both Denman tires and Goodyear brand farm tires.Know More
While these are the only remaining U.S. owned tire manufacturers, a number of other brands are members of the Rubber Manufacturers' Association, the union which supports U.S. tire manufacturers. The members of the RMA are Bridgestone, Continental, Cooper, Goodyear, Michelin, Pirelli, Toyo and Yokohama, which is also a list of all of the major tire companies in the world.
All of these brands have factories in the United States, and their tires are produced by U.S. workers, but most of them have their headquarters located in either Europe or Asia. For instance, Michelin is a French company, and Pirelli is based in Italy, while the head offices for Toyo and Yokohama are in Japan.
Firestone Tires used to be one of the biggest and oldest American tire manufacturers, having been formed in 1900. However, the brand was sold to Japanese company Bridgestone in 1988 and is now wholly Japanese-owned, despite having headquarters in Nashville, Tenn.Learn more in Tires, Rims & Wheels
The letters on tires normally indicate whether they are passenger or lightweight truck tires, if the tires are radial and their maximum speed capability. Tires that do not begin with a letter are Euro-metric tires, which have a different load-bearing capability than P-metric tires, according to Goodyear.Full Answer >
Passenger car tires weigh about 22 pounds, while light truck tires that fit rims up to 17 inches in diameter weigh about 35 pounds. The tire of a semi-truck or large truck can weigh as much as 120 pounds.Full Answer >
Tire siping works to improve traction by cutting thin slits across the surface of the tire. The process is done by placing the tire on a specially designed machine that rotates the tire while making small, nearly invisible 90-degree cuts in the tread.Full Answer >
A tire valve stem is installed by inserting the threaded side of the valve stem through the rim valve stem hole. Then, pull it through by using a specially made valve stem insertion tool or by using standard pliers. Complete the installation by reinstalling the tire and reinflating.Full Answer >