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      04-29-2016, 11:10 AM   #1
ashburyn54
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Lowering Springs//Track guys chime in

Since this car is begging for a slight drop I'm interested in doing something similar to the H&R super sports. I've always had full coilover setups.

For this car I think I'm going to try some lowering springs first. Bump up a spring rate and drop about 1" and 1.5". Adjustable end links as well. Maybe some swifts off the f80 m3/m4.

What are your thoughts from people who have done both? The e92 m3 reacted well to just springs. Some cars don't. I understand both arguments, no need to explain. I just want some real world "feel" insights.
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      04-29-2016, 02:38 PM   #2
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I never just do springs. Ruins the balance that BMW has done and the shocks do not work as well. You need the proper shock travel.
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      04-29-2016, 02:40 PM   #3
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Quote:
Originally Posted by David1
I never just do springs. Ruins the balance that BMW has done and the shocks do not work as well.
That's been a concern for me. I wouldn't be surprised if some nice development retained the corner balancing. At least that's what I hope for
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      04-29-2016, 03:24 PM   #4
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BMW did the M2 right. Lower for looks.
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      01-10-2017, 08:00 PM   #5
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Quote:
Originally Posted by ashburyn54 View Post
Since this car is begging for a slight drop I'm interested in doing something similar to the H&R super sports. I've always had full coilover setups.

For this car I think I'm going to try some lowering springs first. Bump up a spring rate and drop about 1" and 1.5". Adjustable end links as well. Maybe some swifts off the f80 m3/m4.

What are your thoughts from people who have done both? The e92 m3 reacted well to just springs. Some cars don't. I understand both arguments, no need to explain. I just want some real world "feel" insights.
Lowering springs may be okay for the street, but may hurt you on the track.

You are right on as to the E9x chassis responded well to Swift Spec-R springs, but the F8x chassis didn't get the same results. May have a lot to do with how the struts and shocks are valved between the two chassis.
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      01-11-2017, 01:09 PM   #6
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Quote:
Originally Posted by HP Autosport View Post
Quote:
Originally Posted by ashburyn54 View Post
Since this car is begging for a slight drop I'm interested in doing something similar to the H&R super sports. I've always had full coilover setups.

For this car I think I'm going to try some lowering springs first. Bump up a spring rate and drop about 1" and 1.5". Adjustable end links as well. Maybe some swifts off the f80 m3/m4.

What are your thoughts from people who have done both? The e92 m3 reacted well to just springs. Some cars don't. I understand both arguments, no need to explain. I just want some real world "feel" insights.
Lowering springs may be okay for the street, but may hurt you on the track.

You are right on as to the E9x chassis responded well to Swift Spec-R springs, but the F8x chassis didn't get the same results. May have a lot to do with how the struts and shocks are valved between the two chassis.
Thanks guys! I think the shock valving alone even with stock springs could be greatly improved. Those rear mounts are tricky
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      01-13-2017, 06:54 PM   #7
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Quote:
Originally Posted by ashburyn54 View Post
Thanks guys! I think the shock valving alone even with stock springs could be greatly improved. Those rear mounts are tricky
Yes, better struts and shocks will improve the handling and ride quality. Stock valving are too high on the compression side and too little on the rebound side.
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