Front tires

If the op doesn’t mind me asking......
Is there any truth to “if you run a radial up front, you need to run a radial rear tire”
Or does anyone have experience with this either way (bias/radial)
Thank you!

it’s suppose to track goofy. I’ve ran a set of bias slicks at the track with radial front runners. It felt fine.

pretty sure Keith runs old bias ply front runners and radial rears on his valiant.