Ya know ... I have heard MANY sides to both, all I can do is give "MY" own experience. I have 15x10 steel wheels with 36x12.50" TSL Bias Swamper's. The tires are probably near the 80% new range and I have a "welded" rear diff. I have many times ran all four tires down to 4lbs WITHOUT ever breaking a bead. In addition to that have ran them on the street with that kind of pressure, "the welded diff pushes hard on the front tires when turning" and still have never had a problem. A good Wheeling buddy tossed out his 10" wide wheels to go to some 8" ones, hoping to gain what everybody else hopes to gain: and that is that the tire stays on the rim when aired down. Well, the very next time we went out for a trail run, he was at 10.5 lbs and guess what? Yep.... hit a small hole on a hill climb with his foot to the floor, lot's of wheel speed :driving:and off it came! :yikes:Needless to say we were all shocked.
I think it all comes down to a couple different things. The brand name and make of the wheel. Also the finish they put on them I am sure plays a part.
When I purchased my 15x10 (black steel) new and had them mount up my first original set of tires (36x12.50 TSL Radials) they must of stuck like glue because a year later when I had my bias plies put on the guy at the tire store asked what the he__ I did to make them stick. I was not there but he said he had a heck of a time "breaking" them off the bead. I then figured out why I never broke a bead with the radials. I am guessing that my bias plies are sticking as good for the same reason also.
