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The BMW Range
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Anti Roll Bar
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<blockquote data-quote="moots" data-source="post: 73487" data-attributes="member: 219"><p>I donno if it's placebo or not but I also installed Zeneger's UR bar and I do notice quicker and more immediate turn in.I will follow Fabians suggestion and remove the bar after a week and compare.</p><p></p><p>Does strut bar size matter?I guess,if you go to the extremes,comparing a 1"dia bar to 3".What we want is to stop the strut towers from flexing and this desires an optimum diameter bar.</p><p></p><p>bazet......nah....some write up from mat Bruno's site........</p><p> </p><p>*********************</p><p>Sway bars (anti-roll bar)</p><p> </p><p>Sway bars tie the lower suspension components together accross the front and the back, they affect the car oversteer and understeer. Bigger sway bars improve stability while cornering, the best setting is fully soft for the front and hard for the back.</p><p></p><p>Stock: Front: 23mm - Rear: 15mm.</p><p>Sport suspension: Front: 24mm - Rear: 18mm.</p><p>M-Technic suspension/US E34 M5 3.6: Front: 31 35 2 226 333 - 25mm Rear: 33 55 2 226 507 - 18mm</p><p>Eibach: Front 26mm - Rear: 13mm. (yes, I called them to confirm)</p><p>Racing Dynamics: Front 27mm - Rear: 19mm.</p><p></p><p>Also there were Nuerburing (BMW's spelling) rear swaybars for the M5 Touring. These were the biggest rear bars ever offered. These may be the perfect complement to the 27mm bar offered by RD as their front rear ratios are highly biased to understeer and these may improve the situation somewhat. Rear 33 55 2 227 416 - 20mm</p><p></p><p>Information provided by Phaedrus</p><p> </p><p>Strut bar (strut tower bar - strut brace) </p><p>They link the two opposite strut towers together. A good strut brace is design to reduce the flex in the strut towers when the car is in a corner. The flex is greater if the car is lowered.</p><p></p><p>A well designed strut bar is a must have if you track your E34, it will improve the chassis stiffness making the the steering quicker and more responsive... Perfect for the autocross.</p><p></p><p>Ok, why do I talk about a well designed bar? </p><p>The best bar would have no link to it and shouldn't be adjustable, because you want NO flex in the bar (it kind of defies the purpose). Else you will just buy a worthless piece of engine</p></blockquote><p></p>
[QUOTE="moots, post: 73487, member: 219"] I donno if it's placebo or not but I also installed Zeneger's UR bar and I do notice quicker and more immediate turn in.I will follow Fabians suggestion and remove the bar after a week and compare. Does strut bar size matter?I guess,if you go to the extremes,comparing a 1"dia bar to 3".What we want is to stop the strut towers from flexing and this desires an optimum diameter bar. bazet......nah....some write up from mat Bruno's site........ ********************* Sway bars (anti-roll bar) Sway bars tie the lower suspension components together accross the front and the back, they affect the car oversteer and understeer. Bigger sway bars improve stability while cornering, the best setting is fully soft for the front and hard for the back. Stock: Front: 23mm - Rear: 15mm. Sport suspension: Front: 24mm - Rear: 18mm. M-Technic suspension/US E34 M5 3.6: Front: 31 35 2 226 333 - 25mm Rear: 33 55 2 226 507 - 18mm Eibach: Front 26mm - Rear: 13mm. (yes, I called them to confirm) Racing Dynamics: Front 27mm - Rear: 19mm. Also there were Nuerburing (BMW's spelling) rear swaybars for the M5 Touring. These were the biggest rear bars ever offered. These may be the perfect complement to the 27mm bar offered by RD as their front rear ratios are highly biased to understeer and these may improve the situation somewhat. Rear 33 55 2 227 416 - 20mm Information provided by Phaedrus Strut bar (strut tower bar - strut brace) They link the two opposite strut towers together. A good strut brace is design to reduce the flex in the strut towers when the car is in a corner. The flex is greater if the car is lowered. A well designed strut bar is a must have if you track your E34, it will improve the chassis stiffness making the the steering quicker and more responsive... Perfect for the autocross. Ok, why do I talk about a well designed bar? The best bar would have no link to it and shouldn't be adjustable, because you want NO flex in the bar (it kind of defies the purpose). Else you will just buy a worthless piece of engine [/QUOTE]
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