[Boog]

If upon inspection you see evidence of the wheel rubbing the lower control arm when turned it usually will contact the outer lip area around the lower ball joint. This is a common issue for us using stock offset 8x15" wheels with lowered spindles.Many of us have gained the needed clearance by grinding the lip in that area back a couple of inches. If the wheel is rubbing there will be witness marks on the wheel and control arm. You may be able to add a 1/4" wheel spacer to get enough clearance. Many of us chose to grind the lca.
Look it over good first and see if this is the case with yours then use the forum search button to see numerous threads on it.