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Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
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Old 01-08-2013, 09:53 PM   #21
secono330ci
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Is this a joke? Wheel lift can be a sign of too much sway bar. The Hotchkis increased my last ZHPs wheel lifting tendencies.
What suspension are you running?
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Old 01-08-2013, 10:21 PM   #22
serdar255
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Which one? Doesn't Bavauto sell several? And you should either buy upgraded endlinks or fresh Lemfoerder endlinks with bigger sways.



Do you have aftermarket sways?

I had Hotchkis, wouldn't do it again. They certainly give the car a more buttoned down feel, but they don't improve grip as much as you initially feel like they do. Also the endlinks wouldn't stay tight until I double nutted them with red loctite.

I have a 25/20 setup now from the Z4 M-Sport front/E46 convertible/Xi rear, all OEM parts, and it's a nice upgrade and I have no complaints.



Hotchkis bars are hollow- so 30mm isn't what you think it is. For the most part I do agree though.
Turner Motorsport, they certainly increased grip and reduced under steer.
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Old 01-08-2013, 10:25 PM   #23
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Turner Motorsport, they certainly increased grip and reduced under steer.
Stiffer sway bars do NOT increase grip. They actually increase weight transfer to the outside wheels which reduces max grip.

Their benefits are 1) reducing body motion for better repsonsiveness/communication from the chassis (this is an important characteristic for me so I went with the Hotchkis set) and 2) adjustable sways can help drivers dial in over/understeer by controlling weight transfer on each axle. Stiffer bars=more weight transfer=less grip on axle in question.
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Last edited by KrasivataSabine; 01-08-2013 at 10:28 PM.
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Old 01-09-2013, 02:21 PM   #24
Grande D
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What suspension are you running?
First ZHP: Koni Yellows, Eibach Pro Kit springs, Hotchkis sway bars & endlinks front + rear, and Powerflex RTABs.

This one: PF RTABs, Koni Yellows, stock springs & 25mm front/20mm rear BMW (but not stock) sway bars.

This one is faster than the old one. There could be a number of reasons but ultimate grip really is not determined by the sways.

Other variables are no sunroof on this one, and different tires.

Last edited by Grande D; 01-09-2013 at 02:22 PM.
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Old 01-09-2013, 05:15 PM   #25
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How do you feel about the power flex rtabs? I really like ride comfort so I'd never upgrade engine mounts to poly or solid but I would always welcome more handling response
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Old 01-11-2013, 06:50 AM   #26
Grande D
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Powerflex RTABs have a minimal increase in harshness. It would be imperceptible if you hadn't driven a car for a week- lets put it that way. I originally went with the OE/limiter setup, but for the RTABs Powerflex is a solid choice (pun intended). Everything else I stick to rubber. I'm a stickler for NVH.
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Old 01-12-2013, 07:18 AM   #27
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If the struts ans shocks are good I'd go with bars next. But get matched set. As mentioned one stiff bar and one soft will unbalance the car. If the struts and shocks are old start there.
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