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BMW M2 Forums 2023+ (G87) Wheels | Tires | Suspension | Brakes | Chassis

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      06-21-2024, 09:54 AM   #1
Haywan88
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AST ADJUSTABLE SPRINGS - Front Creak / Scraping sound

Hi All

I have bought my car with AST adjustable springs - lowered to the max height. The only issue i have is at full lock or tight carpark manouvres front has suspension creak sounds and sometimes scraping sound at full lock

is this just a normal side effect of having adjustable springs or does this need to get replaced or looked at???

never had adjustable springs so i cant compare that to my normal experience

any help would be appreciated!!
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      06-25-2024, 04:13 PM   #2
M_Power Rob
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Quote:
Originally Posted by Haywan88 View Post
Hi All

I have bought my car with AST adjustable springs - lowered to the max height. The only issue i have is at full lock or tight carpark manouvres front has suspension creak sounds and sometimes scraping sound at full lock

is this just a normal side effect of having adjustable springs or does this need to get replaced or looked at???

never had adjustable springs so i cant compare that to my normal experience

any help would be appreciated!!

My guess is the scraping sound is your front tires rubbing on the inner fender liner vents. If so, replace with proper screening (with all parts being stainless steel) or go bigger buck route with aftermarket liners.

What size are your front tires and how low are you lowered?
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      06-25-2024, 05:41 PM   #3
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Scraping is due to the wheel rubbing against the inside liner at full lockout during reverse and sometimes forward movement.

Mine does the same with aftermarket wheels and dropped on VTF’s. You either live with it or buy aftermarket liners that are extended…or cut out yours to make room (I don’t recommend this).
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      06-25-2024, 07:16 PM   #4
M_Power Rob
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Quote:
Originally Posted by Geighty7 View Post
Scraping is due to the wheel rubbing against the inside liner at full lockout during reverse and sometimes forward movement.

Mine does the same with aftermarket wheels and dropped on VTF’s. You either live with it or buy aftermarket liners that are extended…or cut out yours to make room (I don’t recommend this).

Correct, dont cut the vents and leave open...you remove the vents and use SS screening with SS rivets. Way cheaper than the aftermarket liners and fully functional. No more rubbing for me.

This is not my liner but a liner for another car my builder did, same way we did mine.
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      06-25-2024, 07:46 PM   #5
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Quote:
Originally Posted by M_Power Rob View Post
Correct, dont cut the vents and leave open...you remove the vents and use SS screening with SS rivets. Way cheaper than the aftermarket liners and fully functional. No more rubbing for me.

This is not my liner but a liner for another car my builder did, same way we did mine.
Super clean.
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      06-26-2024, 02:33 AM   #6
Haywan88
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Quote:
Originally Posted by Geighty7 View Post
Scraping is due to the wheel rubbing against the inside liner at full lockout during reverse and sometimes forward movement.

Mine does the same with aftermarket wheels and dropped on VTF’s. You either live with it or buy aftermarket liners that are extended…or cut out yours to make room (I don’t recommend this).
just been told the scraping is most likely due to spacers and wheel rubbing against the inside liner

as for the creaking sounds - will need to get the AST springs looked at
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      06-26-2024, 03:37 PM   #7
Haywan88
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Quote:
Originally Posted by maxwell smart View Post
You can check the springs by eye and spin them to the correct orientation with no tools , but by hand. you just have to jack the front up to unload the spring. The HAS kit springs are so thin and weak when the car is jacked up in the front there is virtually no spring preload because of the undersized springs. I installed a KW HAS kit on my car last july and removed it two weeks later after realizing how much it downgraded the vehicle.
what did u end up putting on ?
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      06-28-2024, 11:28 AM   #8
Haywan88
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Quote:
Originally Posted by maxwell smart View Post
The smartest thing you could do is find a set of take off springs and perches removed from a nearly new car as I did and put the car back to stock that way . lots of people have the parts you need laying around and will never touch them again.
thanks for your advice mate really appreciate it - did it sit lower with that set up?
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