Just picked up a 2010 535i xdrive M sport wagon with the n54 and looking to upgrade the front and rear sway bars. Has anyone found any bigger diameter sway bars to fit? I can’t find any direct kits online. Also, with it being an Xdrive car, can I do coil coilovers or should I just replace the stock M suspension? Thank you!

 

Rear M5 is bigger and bolts in long as you have the m5 bushing IIRC. It's been a long time so I don't recall the fronts. If you are looking for the biggest ones available, you'll want some Racing Dynamics sways. But those are very hard to come by, especially as a set.

Xdrive isn't an issue for the coilovers, more so the rear bags. I personally have KW v3's on my car and absolutely love the ride and look. Some other brands have rear bag delete and replace with a spring. Those are usually a cheaper option to the v3's.

 

Rear M5 is bigger and bolts in long as you have the m5 bushing IIRC.

sorry for my ignorance, but what do you mean by m5 bushing “IIRC”? Most sites don’t seem to offer a sway bar kit that fits the wagon but I found the KW coilovers, thank you!!

 

IIRC= If I remember correctly

 

Number 2 in the diagram. This is the M5 part number
https://www.realoem.com/bmw/enUS/sho...diagId=33_1171

 

For what it's worth rear e60 sway bars fit just fine. I upgraded my 535i xdrive's 13mm with a 14mm from like an e60 530 I think. Still nicely balanced. I don't have m sport suspension though.