Many brake parts (indeed many parts) are common to both the W201 and W124. Look at this list of brake rotors and note similarities. For this reason there are many brake upgrade options for the W201s and smaller engined W124s.


Front Rotors:

W201 diesel and petrol up to 2.0:
solid 262 x 11 (limit 9)

W201 2.3 & 2.6:
vented 262 x 22 (limit 19.4)

W201 16 valve:
vented 284 x 22 (limit 19.4)

W124 excluding 3.0-24V, 3.2, 4.2, 5.0, some diesel:
vented 284 x 22 (limit 19.4)

W124 3.0-24V, early 3.2 & 4.2:
vented 295 x 22 (limit 19.4)

W124 late 3.2 & 4.2:
vented 294 x 24 (limit 22.4)

W124 some diesel models:
solid 284 x 12 (limit 10)


Rear Rotors:

W201:
solid 258 x 9 (limit 7.3)

W124 excluding wagon, 3.0-24V, 3.2, 4.2, 5.0:
solid 258 x 9 (limit 7.3)

W124 wagon, 3.0-24V, 3.2
solid 278 x 9 (limit 7.3)

W124 4.2:
vented 278 x 24

__________________
107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.