The W210 chassis originally came with one of the following OEM wheel setups:
E300/E320: 16 x 7.5” ET41 E420: 16 x 7.5” ET41 E430: 16 x 7.5” ET41 (before 2000); 17 x 7.5” ET41 (after 2000) Sport Package: 17 x 8” ET37 Special Edition: 17 x 8” ET35 E55: 18 x 8” ET31 front, 18 x 9” ET35 rear.