My main gripe about my suspension setup is that there is some bump steer (and perhaps some tramlining as well). Otherwise I love the performance. I see that there are a fair number of "Bump Steer Correction Kits" a la modified tie rod ends such as these: https://www.bimmerworld.com/Suspensi...SABEgIPd_D_BwE
Does anybody have experience with these?
I would like to measure out and model my suspension geometry to see just how bad it is but it may be easier to have the alignment shop raise and lower the car and check the toe change.
My setup:
Ground Control Race (sways, coilovers, camber plates)
525# Front / 650# Rear Eibach springs, 6” long springs, corner balanced but set to almost max. height on the fronts. Koni adjustables (rebound only)
Alum rear subframe bushings, poly everything else.
Square setup 18 x 9.5 ET22 with Hankook RS-4
I would also welcome some suggestions on my alignment settings. It is a tad aggressive for the daily driving I do (5000 miles street use/ 1-2 track days per year).
Please note that the caster is more negative than stock. Im not sure I can adjust it more positive without rubbing but if I can, I'd like to exchange a little bit of camber for a little caster.
I was thinking of:
Decrease front camber from 3.1 degrees to 2.5 degrees
Degrease rear camber from 2.4 degrees to 2.0 degrees rear camber
Keep the front and rear toe where it is.
Increase caster from 5.8 degrees to 7 degrees (as long as it doesnt rub)
My goal is that in addition to a bump steer kit, that this will help with tire wear and that the caster changes will enhance freeway stability while adding a smidgen of dynamic camber gain to hopefully keep the cornering grip and balance awesome.
Let me know your thoughts.
Does anybody have experience with these?
I would like to measure out and model my suspension geometry to see just how bad it is but it may be easier to have the alignment shop raise and lower the car and check the toe change.
My setup:
Ground Control Race (sways, coilovers, camber plates)
525# Front / 650# Rear Eibach springs, 6” long springs, corner balanced but set to almost max. height on the fronts. Koni adjustables (rebound only)
Alum rear subframe bushings, poly everything else.
Square setup 18 x 9.5 ET22 with Hankook RS-4
I would also welcome some suggestions on my alignment settings. It is a tad aggressive for the daily driving I do (5000 miles street use/ 1-2 track days per year).
Please note that the caster is more negative than stock. Im not sure I can adjust it more positive without rubbing but if I can, I'd like to exchange a little bit of camber for a little caster.
I was thinking of:
Decrease front camber from 3.1 degrees to 2.5 degrees
Degrease rear camber from 2.4 degrees to 2.0 degrees rear camber
Keep the front and rear toe where it is.
Increase caster from 5.8 degrees to 7 degrees (as long as it doesnt rub)
My goal is that in addition to a bump steer kit, that this will help with tire wear and that the caster changes will enhance freeway stability while adding a smidgen of dynamic camber gain to hopefully keep the cornering grip and balance awesome.
Let me know your thoughts.
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