[thejafe]

Lifting the Jeep with spacers has the effect of shortening the track bars. The rear driver side tire will then be pulled too close to the spring cup. You need wheels with different backspacing or adjustable track bars. Also, minor wheeling will cause your sway bar links to burst b/c they will be pulled so tight. Start thinking about quick discos.

You will NOT have rubbing problems with stock wheels that have 5.5" backpacing which most if not all do. If you are using 31x10.50's (which is what you should be running if you only have a BB) you will be perfectly fine... countless Jeep owners run that setup. The only reason you would need wheel spacers or rims with different backspacing is if you are running a tire wider than 10.50". IF so then you WILL rub the spring perch.