We changed our control arms on wife's e53 and there front tires were down to the "redneck wear bars" (steel belts) within 3 weeks. Lesson learned. Of course I figured out how to use a string between front and back tires to align myself and that worked great for a couple years never had it pro aligned in the last four years and the tires wore pretty evenly down to the actual wear bars.

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)