Think this wheel tire combo will work.

[99COOP]

They will fit, but you might rub your lower control arm with the 5.5 BS.

 

[Old Painless]

I run 305/50/20's on my 8.5" wide factory wheels and my truck has nothing done to the suspension other than a slight crank in the front to level it out... everything works with zero rubbing.

 

[sparg93]

Evan - do you have a photos of your rig...i'm thinking of running the same size tire/rim combo.