I hate radials, I've had more trouble with them than I've ever had with bias tires. For the same price, I would get bias. I've had more radials with tread separation than I care to remember. I think the worst ones I ever had were the TA Radials I had on my 79 Blazer years ago, absolute garbage tires.My 2 cents says stay with bias unless you get a really good deal on the radial.Remember the words "TREAD SEPARATION".