I'm referring to the 51 wheels. There are at least two offsets. I have two of them. One set came from my 51 1-ton, the other I bought loose just for the tires and they are identical to the 51 wheels except for the offset. They are offset two far inboard and won't fit. I don't know when they changed design. My long-ago landlord had a 58 1-ton with 17-inch wheels but they l looked different than mine as I recall.
The originals had an inboard offset of 9/16 as close as I can measure. This offset produced "center-point steering," which was easier on the arms. The zero-offset trailer wheels work pretty well but the steering is still heavier than stock but the radial tires probably contribute to that.
