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      09-25-2019, 02:36 PM   #41
fe1rx
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Drives: 135i, 328i, Cayman S
Join Date: Jan 2008
Location: Canada

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Quote:
Originally Posted by davidwarren View Post
Fe1rx- have you looked into the affect the adjustable rear guide arm may have on rear caster angle?
The rear caster varies very dynamically with suspension travel. Typical values would be -4° at full droop to -11° at full compression. I can't see any benefit in making a small change in rear caster by adjusting the guide arm, and I suspect any such change would have a detrimental effect on rear bump steer (although I have no numbers to prove it). To minimize that possibility my opinion is that the trailing, guide and upper arms should remain OE length.
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