I just installed some 26x10.5x26 Mickey Thompson Sportsman Pro's and they sure do drift alot even with max pressure of 30 psi. I don't expect them to ride like steel belted radials, but it feels like I am loosing control even at 70 mph and starts getting squarally. With the radials I had the car felt great even well over 100. The only thing I can figure is that they should have tubes in them? The place I got them from said they don't need them. Would that help? Is this normal and is it something I will just get used to? Thanks!