[Jim Holden]

I hit the wrong key, obviously 1/4 x2= 1/2".

...and Bob comes through with the 8x12.

For the sake of the discussion I was omitting consideration of wheel flanges, etc. and essentially viewing this as Bob has suggested i.e.; that the centerline of the 6" wheel is 3" in and (inasmuch as I don't have any other dimensions than the backspacing) the backspace is 3.25", I would have to add the negative offset number, less the centerline number to the track to get the flange to flange number.

Maybe I can coerce Bob into going into his data base and coming up with the magic number for the 6" Dayton 70 spoke wire wheel... and even a diagram.

Jim