Wheel Vintiques Steel Wheels ?s

For just a couple of extra bucks, WV will put the spider almost anywhere you want it; so you can specify the backspace.
So then I would maybe go 7.5s on the front with 235s and 8.5s on the rear with the biggest tires you can stuff in there which IIRC is 255s, but not sure.
Putting fat tires on skinny rims, while possible, does nothing for handling, and can prematurely wear the tires out. Get it right with the pressures dialed in and the tires cam last ......... a really long time.
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(1) I am not sure what you mean by " spider " , if you mean the wheel center , then it can only be placed in the " drop center area " , if that doesn't get you what you want then the wheel must be reversed to get the backspace you need.
(2) So WV is now making 1/2 sizes in wheel bands , if so that is good news , so the wheels can be really customized to fit well. Last I knew , they were only making whole number sizes , no 1/2 sizes. I will have to check with my guy at Coker Tire....

Frank