[Junebug85]

Originally Posted by Lancelot

I think i just reused the ones from the original strut bar;

If you go by the book
1/ the f90 bolts are probably a bit longer as the strut bar is significantly thicker
2/ you’re supposed to use new bolts each time with torque to yield

But to be honest i don’t think it matters that much in that particular situation,

Many thanks for the response - much appreciated

[23109VC]

If i just put on f90 M5 comp roll bars onto my otherwise stock M550 is that going to work well? I have foudn a used set on ebay for $500 shipped.

I know i will lose hte “vibration” dampener that the M550 bar has in the rear - no idea if that is really something I need or will notice is gone?

From other threads I have read it sounds like this is a good starting point to stiffen up the handling and kill some of the body roll?

After that I might add Dinan springs to my OEM dampers… but i have 80k on the car, not sure if this would wear them out really quickly or do nothing at all to damper life? I’d rather not go to an aftermarket suspension for the M550 and lose hte on the fly dampening adjustability.

I don’t wnat to track my car.. ij ust want the car to have a sportier feel and keep the ride relatively close to stock but gain better cornering. I like how the car rides, it’s just a tad too soft in my opinion.

Thoughts??

Thanks!!

[Dasky_spas]

Do you have install photos of the cross strut brace and where it replaced on the rear subframe? If I'm not mistaken there's a large bushing in place so I'm assuming that's getting tossed in lieu of the cross member.

[Junebug85]

Originally Posted by Dasky_spas

Do you have install photos of the cross strut brace and where it replaced on the rear subframe? If I'm not mistaken there's a large bushing in place so I'm assuming that's getting tossed in lieu of the cross member.

Do you have any pictures of this bushing? Curious to know what you mean?
From what I've seen when looking under the car, there's nothing in the way of it... the 2 longer ends go under the tank covers. The new covers have a cut out shape that accommodate the 2 longer arms on the brace.

[Dasky_spas]

The rubber mountings, shown as 2 and 3 of the real oem diagram. Do they stay in place with the new cross brace?

https://www.realoem.com/bmw/enUS/sho...diagId=33_1976

[Lancelot]

Yes no change to bushings, only the bolt is replaced by the f90 part

[admranger]

Originally Posted by Lancelot

Yes no change to bushings, only the bolt is replaced by the f90 part

How are the Dinan mono balls aging? I have had to replace both thrust arms due to leaking bushings (on both the m550i and my g01 x3 m40i). Both between 30 and 40k miles.

[Lancelot]

Originally Posted by admranger

How are the Dinan mono balls aging? I have had to replace both thrust arms due to leaking bushings (on both the m550i and my g01 x3 m40i). Both between 30 and 40k miles.

I had one of them fail, replaced very quickly at no charge by Dinan who sent me another set (great support); the other one is still going strong, so I'm left with a spare monorail bushing in case something goes wrong.

[Bee Pee]

Originally Posted by Lancelot

I had one of them fail, replaced very quickly at no charge by Dinan who sent me another set (great support); the other one is still going strong, so I'm left with a spare monorail bushing in case something goes wrong.

Hi Lancelot - are you considering or do you have -30min A arm installed to add more negative camber to yr cars front wheels ?

[Lancelot]

Originally Posted by Bee Pee

Hi Lancelot - are you considering or do you have -30min A arm installed to add more negative camber to yr cars front wheels ?

Yes I think that would be an easy and beneficial change.

That and an LSD, I need a Quaife on the rear axle hehe

[cola.p]

Originally Posted by Lancelot

Yes I think that would be an easy and beneficial change.

That and an LSD, I need a Quaife on the rear axle hehe

Bee Pee do you guys mean this ‘A-arm camber adjustment 31126870026?

I’m about to pull the trigger. I found this one on ebay https://www.ebay.com/itm/275573128095?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=HKXZFkVmRJC&sssrc=4429486&ssuid=&var=&widg et_ver=artemis&media=COPY Seem like it is an OEM brand Metrix Premium. Not sure the quality.

Have you guys changed to this one yet 30736866 -30min?

[Bee Pee]

Originally Posted by cola.p

Bee Pee do you guys mean this ‘A-arm camber adjustment 31126870026?

Yes