I also like aluminum slotted wheels. I put these on my truck in 1981. I am happy with them, and I like the look. If I knew then what I know now, then I would have bought 6 inch ones and use narrower tires than I have. They do clear the disc brakes that I recently added. The tire size that I have used since radial tires became common are P235/70R/15.
1950 GMC 100 Panel Truck, 1958 270, 3-spd Saginaw with BW OD, 3.73 12 Bolt Differential from a 1966 C10, Front Disc Brakes Hill Holder Bought it in pieces 9-1976, driving since 6-1978 Follow in the DITY