a trailer support wheel assembly having a wishbone frame pivotally connected to the trailer frame at two rear mounting points and adjustably connected to the trailer frame at a single forward point . a resilient suspension assembly and spindle is contained by the wishbone frame assembly , and the spindle is further connected to one or more wheels which may be lowered into contact with the ground . the wishbone frame assembly may be adjustably positioned to permit the wheels to carry a greater or lesser load portion of the trailer as it is connected to a vehicle .