I pull rear wheels off today and noticed that one of the previous owners had used 1/2" bolts and nuts instead of using lugs and nuts. Holes in hubs and rims have 9/16" holes so the 1/2" bolts were very sloppy. The front hubs are threaded to accept about a 5/8" bolt (not sure, took one off but didn't measure) with no nut.My question is are the rear hubs originally suppose to have lugs and nuts or were the rear hubs threaded like the front? I could not see any visible signs of threads in hub holes due to distoution from the 1/2" bolts. Thanks for reply.