A running gear for a vehicle as defined in claim 5 wherein said ground engaging means comprises at least two of said minor wheels for each major assembly. References Cited UNITED STATES PATENTS 2,400,824 5/1946 Jackson -8 2,742,973 4/1956 Johannesen 180'8 3,208,544 9/1965 Colvin 180-5 1 3,241,848 3/1966 Flory 280-526 3,283,839 11/1966 Brown et