I use hub centric spacers and they are problematic. But they are cheaper than custom rims, they make the car look nice on lowered cars and make a difference on the track. I check my wheel bearings often because of the racing I do. I've had wheel bearings go bad before on other cars and it was indeed caused by heavy aftermarket chrome wheels with aggressive offsets. But hey, wheel bearings don't cost much (speaking from memory) and are easy to replace.

Les