The Stovebolt Site Forums The Parking Lot Big Bolts having wheel adapters made,, need a set?

Yes, exactly.
The hubs in question are pre 1954 1.5 and 2 ton. And the wheels are 1954 or later, same bolt pattern but larger center hole, new wheels include 19.5" wheels from GM "step vans".

From this Tech Tip http://www.stovebolt.com/techtips/wheels/


Note on the 10-lug wheels with 7.25” bolt circle
-- The one problem you may have with the new wheels is the wrong center hole size. To start with you need to know what size center hole your original wheels have, actually measure it, or get an idea from the list of years and bolt patterns below. All the new style tubeless wheels have a large 5.25” center hole (except for the larger ford 5.46 center hole wheels). The problem comes when you want to use these new wheels on an older (generally pre 1954) truck, as there is a ½” difference in hole size. Because these wheels are hub-piloted and it is very important that the center hole fit snugly on the hub as designed.

To allow use of new wheels on the older trucks, a set of simple spacers may be needed. For the front these spacers/bushings would be just less than the thickness of the wheel measured at the stud holes, a shrink or press fit on the hub (nominal 4.75”), and a slip fit in the wheel (nominal 5.25”). If you used the original front clamp plate (that has only 5 lug holes and covers the other 5) the adapter bushing could be a slip fit on the hub, as this cover would keep it from falling out. The rear spacers/bushings would be similar to the front, but twice the thickness to allow dual wheels. If it was not a press fit you could again use the clamp plate like on the front, but with 10 stud holes (these clamp plates are stock). Some Loctite and frequent inspections may also work to retain the bushings.

The clamp plates' purpose is to add strength at the center of the wheel. The wheels are designed to use the clamp plates. I have used big washer face lug nuts without the clamp plates, but am switching back to using the clamp plates now that I know better.

Grigg