I am clueless as to the determination of how to match tires to rims.......For a BP build, (I know 6" in front, 8" in rear) What rim diameter do you run in the front, and rear? And what tire sizes would fit on each? I had seen the turfmaster 13x6.50x 6 and it looked like a good gripping tire. Would this only fit on the front? Again, George, I am clueless so please be patient. Thanks