We have a mixture of both bias-ply and radials on our cars(not on the same car

)...there is no doubt to me that the radials handle better and are safer at highway speeds. That said, I still think the bias-plys are fine for local cruises and shorter trips. It is important that your suspension components be in good shape....any problems will be magnified by the bias-ply tires. We use the BFG Silvertown redline radials, Firestone Indy 500's and the Diamondback Classics redlines..all quality products with no issues at all.
wilma