Bias and radials?

[47Hammer]

Back in the late 70's I was running these bias ply tires that were actually recaps. They were called Caldwell Racing recaps and they worked better than the standard bias ply tire but they were hard to balance because of the weight.
After a few near misses (water across the road at speed) I started running the BF Goodrich T/A Radials on the front only and oh boy!! The rear end of that car would dance all around the corners until I matched the radials on all four corners. Much better and faster too.






Note the outer edges of the tread worn out.