Hi Steve,
As others have mentioned, the 15" wheel is perfectly acceptable on a 3A.� In fact, I personally like them more than the common 16" wheels.� with a 7.00 tire, you have more rubber showing.� For lack of a better word, it looks a little more...'tough'.�
My 15" wheels are not Willys Jeep wheels.� They are marked 1955, have hub cap nubs, and may belong to a Scout or maybe a Jeepster.� I covet a set of Willys Jeep 15"ers.� Until a reasonably priced local set comes my way, I will have to muddle through.
Tim