So it sounds like the dot bias ply tire is the way to go! Anyone know if a 28x13.5x15 is a bit smaller or larger than the 325-50-15 as the 325 just clears my rolled body lip with no rubbing. So if it is larger at all I will have an issue. Anyone have any favorite bias ply tires? I used to run a m&h dot tire on my 70 dart and it worked very well. So before I spend some money let me know what you are running and how it works. Again any input is appreciated!