my HOUSING FLANGE TO FLANGE IS 44"
my AXEL FLANGE TO FLANGE IS 49.25"
add my disc rotors and OVERALL wheel mounting is 50"(some people call this drum to drum when using drum brakes)

My centering in the wheel housing is nice WITH THE BIG 315/60 RADIAL!



however id just put your wheels in there centered up in the wheel housing and measure from the inside of the wheel where it mounts to the same point on the other wheel and this will give your your total width needed and mathmattically figure it out to be sure