On my basically stock suspension 1940 Ford standard businessman coupe ... I just used a set of 55/56 F-100 rims on the front. They come in a 15 inch rim size and I had 165/15/80R Kumos on the front. On the rear I had a widened rim with the F-100 center and used a 225/75/15R tire.
I also had a dropped axle and a reversed eye spring in the front and a rear spring de-arched.