Can a 4.00-8 tire fit on a rim that would normally run a 16-6.50-8 tire. I am thinking about putting a set on the front my 67 Round Fender with 23x8.5-12 lugs on the rear. Are tubes required if the tire is a 4 ply? I am looking at a complete set of DEESTONE tires. Any information or opinion would be appreciated.