C63 sway bars
Senior Member
Joined: Sep 2014
Posts: 284
Likes: 103
C63
If they fit, then I'd imagine yes if my assumption is that they're thicker overall.
On my old 135i I swapped in the thicker M3 sway bars and it cornered much flatter however, I felt that the thicker rear was too much and induced oversteer. It was a problem until I swapped in M3 control arms, subframe bushings, upgraded shocks and threw in a mechanical differential. Something to perhaps consider although the front bar only might help your turn-in.
On my old 135i I swapped in the thicker M3 sway bars and it cornered much flatter however, I felt that the thicker rear was too much and induced oversteer. It was a problem until I swapped in M3 control arms, subframe bushings, upgraded shocks and threw in a mechanical differential. Something to perhaps consider although the front bar only might help your turn-in.
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 359
Likes: 5
From: Kansas City,MO, USA
2015 E350 4 matis, 2003- 911 porsche
Just looking for better street use, used to have a C55 and have driven the C63 which stayed flatter in the corners, so trying to get the C350 close to that level, while still maintaining a good ride on the hwy. The C63 bars are 1 mm less than the Eibech, so its a matter of what will be most cost effective. There are some threads that say just do the front and see how it feels?
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Joined: Jun 2008
Posts: 8,078
Likes: 2,867
From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Plenty of threads in the C-Class section about exactly this. It’s a significant increase in bar size and makes a difference. That’s what prompted me to buy the Eibach swaybars for the regular W204, knowing that they would fit the C63 too.
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