You can get very close with a level for camber and a string around the front and back tire for toe.

1/16" spacer in front of the string on the leadinf wdke of both front and back tires at the fastest part works perfectly to achieve 0.15° toe front and back right in the center of spec.

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