tdg0830

I have a black 05 FX4 and I'm considering buying the 22in 08 Harley Davidson Edition wheels off eBay. I want the wheels to poke out a little more than the stock ones but I'm not sure what the backspacing specs are on either. I think a rubber band tire looks stupid so does anyone know how much tire wall I can fit without scrubbing. Most importantly has anyone done this because I would love to see a picture before becoming the guinea pig. I'm open to other wheel ideas also but no chrome. Thanks for any help.