GM has used the 6 on 5 1/2" pattern through out the history of its motor cars and trucks. '29 chevys used this pattern I know. 1/2 ton trucks through the late 60s used this pattern. 4x4s used this until the present, I think. The lug size changed along the way. Current 1/2 ton Silverados uses this pattern. As did many other manufacturers.
I cannot tell by your post what your intensions are with the wire wheels. If it is to use on a 56 truck or car, the 1930 wheels will not handle the loads generated by these vehicles. Nor can I imagin that they would ever look period correct on any 1950s vehicle. But, as far as taste goes, to each his own.
It occured to me that you may be building an 1930 car or truck. In that case the 56 axles are much too wide.
Last edited by Lonnie Gallaher; 09/16/2008 3:43 AM.