Hey guys thinking about buying Xtreme Alloy Series 7089 black wheel and need to know if 4.75 is too little backspacing. I know stock is 5.5 correct? will 4.75 be ok? also its has -6mm offset, will that bee allright? Not too knowledgable when it comes to wheels n tires. If this wheel will do, do you suggest goingt with LT325 60 18 tires or 285 60 18. The truck will be leveled with the bilstein 5100 kit when theese go on.