Potenza S-02: Z-rated high performance passenger radial. Vehicle: Porsche Boxster sports car.
Sizes: 205/55ZR16 front; 225/50ZR16 rear.
In developing a version of the Potenza S-02 for the Boxster, Bridgestone said it incorporated new technologies such as ``variable radius grooves'' instead of straight circumferential tread grooves and a new ``broad grip'' silica tread compound containing much finer particles of silica than previously used.
Proxima RR: passenger, electric vehicle radial.
Vehicle: General Motors EV1.
Specially designed for GM's first commercially marketed electric ve-hicle, the Proxima RR incorporates Michelin's ``Radial XSE'' technol-ogy, which combines low rolling resistance with improved wet traction. The tire also features a special casing and tread pattern for optimum performance with minimal noise at high inflation pressures (up to 50 psi). Puncture sealant in the tread area will seal punctures up to 3/8-inch in diameter, Michelin said.