Suspension refresh Bilstein B4 or B6 ???

Hi all
I have decided to refresh the suspension on my e85 3.0 roadster , just wondering if the B6's are worth the extra cash over the B4?. I don't do any track work and will be fitting new top mounts and probably se springs.
:thumbsup:
 
Do you have any issues with the current (presumably OE) Suspension setup? If you want firmer dampers then get the B6's, if you want to maintain OE ride-comfort, I'd go for B4s. :thumbsup:
 
Great thanks ..fitting the se springs for better ride over rough roads and to stop the car dragging slightly on my drive so b4 sounds the way to go ... as for the top mounts and makes to avoid...was thinking Melye or Febi ?
Thanks
 
I have some brand new B4's if you are interested ?

https://z4-forum.com/forum/viewtopic.php?p=1889810#p1889810
 
Southwestz4 said:
Great thanks ..fitting the se springs for better ride over rough roads and to stop the car dragging slightly on my drive so b4 sounds the way to go ... as for the top mounts and makes to avoid...was thinking Melye or Febi ?
Thanks
I have fitted Meyle rear top mounts to wifey's car and they knock badly. About to replace with Lemforder.
I previously used Febi on the front but they came without the camber pins, or a hole to fit them.
So now I use Lemforder front and rear.
Also bear in mind that if you go back to SE springs they'll raise your ride height and technically you should fit the non-sport bump stops too, which are a little longer. Just pointing that out as if you plug your reg into some of the online sites it'll probably default to the Sport ones.
Your old ones are likely to be pretty goosed by now anyway.
For the bump stops I normally use Febi Bilstein. Don't bother to get the ones with the dust covers for the front as they are plastic. Far better to clean and re-use the original rubber ones assuming they're not split.
You will also need new knuckle bolts for the front lower strut fittings. These are available all over Ebay, search for Part Number 31306779487

By the way, I've always gone for standard Sachs dampers and have no complaints with them at all. Bit cheaper than Bilsteins.
 
enuff_zed said:
Southwestz4 said:
Great thanks ..fitting the se springs for better ride over rough roads and to stop the car dragging slightly on my drive so b4 sounds the way to go ... as for the top mounts and makes to avoid...was thinking Melye or Febi ?
Thanks
I have fitted Meyle rear top mounts to wifey's car and they knock badly. About to replace with Lemforder.
I previously used Febi on the front but they came without the camber pins, or a hole to fit them.
So now I use Lemforder front and rear.
Also bear in mind that if you go back to SE springs they'll raise your ride height and technically you should fit the non-sport bump stops too, which are a little longer. Just pointing that out as if you plug your reg into some of the online sites it'll probably default to the Sport ones.
Your old ones are likely to be pretty goosed by now anyway.
For the bump stops I normally use Febi Bilstein. Don't bother to get the ones with the dust covers for the front as they are plastic. Far better to clean and re-use the original rubber ones assuming they're not split.
You will also need new knuckle bolts for the front lower strut fittings. These are available all over Ebay, search for Part Number 31306779487

By the way, I've always gone for standard Sachs dampers and have no complaints with them at all. Bit cheaper than Bilsteins.
great...thanks for the info :thumbsup:
 
I’ve run B6s with SE springs and sport springs. The B6s very noticeably firm up the ride on either - I actually think the sport springs are better balanced with the B6s, as the SE set up felt under springer but over damped. The trade off is very tight control of the car at speed but it is fairly fidgety. Based on your notes, I think B4s are the way to go.
 
Been running B4s for 4 years now with initially SE springs, then MSport and now back on SE springs again. My spine just cannot get on with MSport springs. Absolutely no complaints with SE/B4 combo :thumbsup:
 
I had the sports suspension and changed it to the Bilstein B12 Pro Kit with powerflex topmounts.

30mm lower than the Sports Suspension.

Firmer ride but better that the V4's it had.

Corners like it's on rails.
 
Back
Top Bottom