BigPete from over on M.A.L.A.K.A.S. (different forum, same name, same person, please don't make this complicated) keeps PM'ing me about the wheels on the C200 retro builds. Just answer him already so I stop getting the messages.
Wheel spec for the bagged W126 (mine): 19x9.5 ET-20 front, 19x11 ET-30 rear, AMG Aero replicas from JapanRacing. Tyres 235/40 front, 275/40 rear. Drop is 90mm front 110mm rear from stock at full deflate, 30mm front 40mm rear at static ride height.
BigPete (the other one) - this is the spec. PM me directly if you want sourcing.