Bilstein B4 or B6 all round - prices

ajguk · Post by **ajguk** » Tue Jun 15, 2021 12:59 pm

Well just spoken to the garage and they'll fit them if I supply them. Just got to decide between B4 or B6 I guess, and I assume it's worth changing top mounts at the same time??

Pbondar · Post by **Pbondar** » Tue Jun 15, 2021 1:16 pm

ajguk wrote: ↑Tue Jun 15, 2021 12:59 pm Well just spoken to the garage and they'll fit them if I supply them. Just got to decide between B4 or B6 I guess, and I assume it's worth changing top mounts at the same time??

B6..you know it makes sense!

dhobbs · Post by **dhobbs** » Tue Jun 15, 2021 4:13 pm

Pbondar wrote: ↑Tue Jun 15, 2021 12:30 pm
dhobbs wrote: ↑Tue Jun 15, 2021 12:04 pm From what I can gather from the bilstein site (not very clear tbh) but b4 are replacement for se shocks, b6 and b8 are for the m-sport shocks (b8 allowing for a further lowering with eibach springs).

B6 will be good if you keep the same springs and don't lower it.
On the E89 my reading (which may be incorrect) is..

B4 for standard sprung E89s (ie non MSport)
B6 for standard sprung E89s but better damping
B8 is for Msport or other lowered springs with same damping rates as B6

I think you are right

,very confusing though

dhobbs · Post by **dhobbs** » Tue Jun 15, 2021 4:17 pm

I replaced my suspension at 100k and whilst it was apart I replaced those parts I had removed such as top mounts, rubber pads etc.
Even the pinch bolts and top mount bolts.
It does push the cost up a little but whilst it's apart it's a good opportunity.

flybobbie · Post by **flybobbie** » Tue Jun 15, 2021 4:40 pm

Silverstar wrote: ↑Mon Jun 14, 2021 10:36 pm
flybobbie wrote: ↑Mon Jun 14, 2021 8:02 pm I fitted B6 to replace standard, feel about the same, not harsh at all. Rides a lot better.
Been on about 6 years now.
Did you get the lowering springs to go with the B6 or did you stock springs?

Stock springs.

ajguk · Post by **ajguk** » Wed Jun 16, 2021 11:30 am

Right well while I think about it I've just ordered a pair of Pilot Sport 4S's for the fronts to replace the runflats that I never got round to. Hopefully that improves the ride a bit (already got them on the back, yes I know I shouldn't have mixed them!). £293 for the pair fitted (19"), not bad.

Rockhopper · Post by **Rockhopper** » Thu Jul 15, 2021 9:31 pm

Put my new B4 struts, top mounts and Suplex springs on today. The old struts are Sachs and look original, they had absolutely zero damping left. I’m amazed at how much difference the new struts have made, it’s less crashy, doesn’t tramline, steering feels more positive and it’s far smoother to drive. Worth every penny.

Z4-forum.com

Z4-forum.com