My '49 CJ3A came with one non-standard wheel: 16"x4" (yes, 4", not 4-1/2) 5 bolt 5-1/2 bolt circle but with only a 3-3/8" center hole. The center hole was too small for it to be on the front. It has four internal "bumps" for hubcap retention. The wheel manufacturers logo stamped on the inner surface next to the tube stem hole is a circle with an A in the center, an 8 under the A, and a reversed P to the left of the A, and another P to the right of the A. I will attempt to put a drawing of this as an attachment to this. Question: Did Willys ever use a 4" wheel, or if not, who did? I can find nothing in my Hollanders manuals to answer this.