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-   -   M5 springs on a 07 525I (https://5series.net/forums/e60-e61-parts-accessories-mods-22/m5-springs-07-525i-40342/)

black5 05-21-2007 10:47 AM
Will M5 springs fit on my 07 525I please let me know?

BlaSTiWi 05-21-2007 11:37 AM
As far as fitment size it probably will but the spring rate will probably all wrong.

Originally Posted by black5' post='426851' date='May 21 2007, 01:47 PM
Will M5 springs fit on my 07 525I please let me know?

black5 05-22-2007 04:20 AM
Originally Posted by BlaSTiWi' post='426863' date='May 21 2007, 03:37 PM
As far as fitment size it probably will but the spring rate will probably all wrong.

What do you mean by spring rate? What are the effects?

BlaSTiWi 05-22-2007 06:17 AM
It's got to do w/ the weight of the car, 525/530 in a way is 'lighter' than say 545/550 or even M5 mainly on the engine weight but effect the overall weight and stuff so the 'heavier' model more than likely to have higher spring rate and if you put it on the 'lighter' model it'll probably too stiff and effect the handling.

If you notice after market spring maker like H&R and/or Eibach has a diff. part nbr. for 525/530 model than 545/550 or even M5 due to mainly on their diameter/thickness and ride height differences that mostly make up the spring rate.

Originally Posted by black5' post='427109' date='May 22 2007, 07:20 AM
What do you mean by spring rate? What are the effects?

black5 05-29-2007 10:17 AM
So should I just go aftermarket instead of going with the m5 springs?




Originally Posted by BlaSTiWi' post='427144' date='May 22 2007, 10:17 AM
It's got to do w/ the weight of the car, 525/530 in a way is 'lighter' than say 545/550 or even M5 mainly on the engine weight but effect the overall weight and stuff so the 'heavier' model more than likely to have higher spring rate and if you put it on the 'lighter' model it'll probably too stiff and effect the handling.

If you notice after market spring maker like H&R and/or Eibach has a diff. part nbr. for 525/530 model than 545/550 or even M5 due to mainly on their diameter/thickness and ride height differences that mostly make up the spring rate.

vegastrashed 05-29-2007 11:04 AM
Yes, go with aftermarket springs. Checkout H&R. Most people here have them or as an alternative Eibach.


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