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Just Installed Sway Bars

SLEEPR85
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Wacky Dee Veteran

Wacky Dee

Posted
Posted

I've got zeh Bilsteins though :( Maybe my stock springs just don't suit the Bilsteins ..which is why I'm thinking of upgrading them to the Whiteline springs from the original GB and get the Whiteline sway bars as well as the same time. Just worried the sway bars might introduce more issues than solve eg. wheels lifting off the ground mid roundabouts when hitting a bump etc

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Sydneykid Grand Master

Sydneykid

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Posted
I've got zeh Bilsteins though :( Maybe my stock springs just don't suit the Bilsteins ..which is why I'm thinking of upgrading them to the Whiteline springs from the original GB and get the Whiteline sway bars as well as the same time. Just worried the sway bars might introduce more issues than solve eg. wheels lifting off the ground mid roundabouts when hitting a bump etc

Well that should rule out a damper deficiency. Changing springs won't affect it either, in fact a higher spring rate, even as little as the 20% to 25% in the Whiteline springs will increase the impact feeling from bumps. So I wouldn't suggest trying a spring upgrade in an attempt to aleviate some other problem.

You do get a little bit of the impact effect from bumps passed though the swaybar, but it's minimal at worst and usually unnoticeable. The benefits of upgraded anti roll far out ways the negatives. I have ugraded the anti roll in many R32/33/34's way more than you most likely have without casuing any undue bump and chosen line retention issues. For example we slam the race cars into the ripple stips with lots of lateral G force on board without excessive effect from the huge levels anti roll we run. So, in your case, I would look at alignment and worn suspension bushes as a more likely cause.

Cheers

Gary

cazman Enthusiast

cazman

Posted
Posted
Well that should rule out a damper deficiency. Changing springs won't affect it either, in fact a higher spring rate, even as little as the 20% to 25% in the Whiteline springs will increase the impact feeling from bumps. So I wouldn't suggest trying a spring upgrade in an attempt to aleviate some other problem.

You do get a little bit of the impact effect from bumps passed though the swaybar, but it's minimal at worst and usually unnoticeable. The benefits of upgraded anti roll far out ways the negatives. I have ugraded the anti roll in many R32/33/34's way more than you most likely have without casuing any undue bump and chosen line retention issues. For example we slam the race cars into the ripple stips with lots of lateral G force on board without excessive effect from the huge levels anti roll we run. So, in your case, I would look at alignment and worn suspension bushes as a more likely cause.

Cheers

Gary

How can worn bushes effect droop travel? if anything they would help droop travel.

Swaybars give you less droop travel.

In Europe they run their race BMWs with no rear swaybars and really long shocks as they cant run LSDs. This is the only way they can manage traction and not lift wheels everywhere.

Sydneykid Grand Master

Sydneykid

Posted
Posted
How can worn bushes effect droop travel? if anything they would help droop travel.

They don't but they do affect the handling after hitting bumps, pehaps you need to reread the original question...

what about bumps/potholes though on a daily ? My understanding of the way antisway bars work is if you hit a pot hole say mid roundabout it would be worse than without them ? Happens a lot in the inner city ..seems whenever I turn, wherever I turn there are friggin potholes
Swaybars give you less droop travel.
Nope, the length of the shock and the free height of the spring determine the droop along with the overall suspension geometry of course.
In Europe they run their race BMWs with no rear swaybars and really long shocks as they cant run LSDs. This is the only way they can manage traction and not lift wheels everywhere.
Who is "they"? I have worked on BMW DTM cars and BMW Production Cars for both the Spa and Nuburgring 24 hours races plus 5 years with BMW SuperTourers here and every single one of them ran/runs swaybars front and rear. Where the regs allow, they are driver adjustable. Hence my question.

Cheers

Gary

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