As far as choosing between radials or bias:
I have a stock 52 3100 that had 700x16 bias ply tires on it when I bought it 4 years ago. It was very challenging keeping it on the road above 40 mph. It tended to dart back and forth, especially when driving on a road that had grooves worn in it. I adjusted the steering box, installed new king pins, made sure the other front end joints were not worn out - none of which helped much. But when I bought some 700x16 radials, it was like I got a new truck! I wish I'd done this 4 years ago.
