Plymouth Duster Suspension/Tubbing Question - Drag Racing
The mini tubs move the inside of the wheel tub to the frame rail, this typically adds about 3” to the depth of the wheel well tub from the outer fender. By moving the leaf springs in to the frame rail and not mini tubbing you really don’t utilize all the available room created by moving the springs as the wheel tub becomes the limiting factor on the tire width. The other limiting factor is the front lower wheel opening, this is where the tire height becomes limited as an interference point. My Demon is mini tubbed and springs moved and I am running a 28x12x15 tire without rolling wheel lips etc. there is plenty of clearance in there with no rubbing.
The mini tubs move the inside of the wheel tub to the frame rail, this typically adds about 3” to the depth of the wheel well tub from the outer fender. By moving the leaf springs in to the frame rail and not mini tubbing you really don’t utilize all the available room created by moving the springs as the wheel tub becomes the limiting factor on the tire width. The other limiting factor is the front lower wheel opening, this is where the tire height becomes limited as an interference point. My Demon is mini tubbed and springs moved and I am running a 28x12x15 tire without rolling wheel lips etc. there is plenty of clearance in there with no rubbing.
