
1) Michelin patent of 1946 2) One lacking bias 3) One with biased ancestors 4) Road gripper 5) Road hugger 6) Un-biased Lincoln supporter
Found on
https://www.crosswordclues.com/clue/radial-tire

A radial tire (more properly, a radial-ply tire) is a particular design of vehicular tire (in British English, tyre). In this design, the cord plies are arranged at 90 degrees to the direction of travel, or radially (from the center of the tire). ==History== A series of plies of cord reinforces a tire. Without this, a tire would be flexible and we...
Found on
http://en.wikipedia.org/wiki/Radial_tire

(from the article `tire`) ...that serves to equalize cord tensions. In a bias-ply belted tire, another set of cords overlies the bias-laid ones. This extra set of cords, ...
Found on
http://www.britannica.com/eb/a-z/r/3
No exact match found.