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      09-30-2019, 09:30 AM   #45
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Quote:
Originally Posted by yellowssm View Post
Thanks for the info. Did you add spacers to your wheels? Did you do a stud conversion or longer lugs?
I run 15F/12R with just longer bolts.
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      10-02-2019, 08:46 PM   #46
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Just got the 550 springs installed
Installer said high chance shocks will blow
Has anyone experienced any issues ?
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      10-02-2019, 10:06 PM   #47
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Quote:
Originally Posted by m52b2g View Post
Just got the 550 springs installed
Installer said high chance shocks will blow
Has anyone experienced any issues ?
How can he quantify that? Just because the compression is increased? Logic might support as such over a long long term of use. I have been lowering all my cars (30+) and never had a shock issue. One will get geometry change but unless you are putting a ton of miles that will cause extreme wear and tear you should be fine.

All 5 cars in my sig are lowered and I have the C63 BS for more than 7 years with no issues. The AMG GTS has been around for over 4+. Now granted these cars are not mileage whores so it all depends on how much driving you will do IMHO.
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      10-03-2019, 01:51 PM   #48
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Quote:
Originally Posted by m52b2g View Post
Just got the 550 springs installed
Installer said high chance shocks will blow
Has anyone experienced any issues ?
If the installer remove the bump stop, then yes, you are at risk for blowing the shocks.

The bump stop as its named after, is to stop the full bump which to avoid the shock to bottoms out.
You will notice it if you are riding on the bump stop at all time.
The ride will be very very stiff and harsh.
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      10-03-2019, 06:05 PM   #49
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Quote:
Originally Posted by r33_RGSport View Post
If the installer remove the bump stop, then yes, you are at risk for blowing the shocks.

The bump stop as its named after, is to stop the full bump which to avoid the shock to bottoms out.
You will notice it if you are riding on the bump stop at all time.
The ride will be very very stiff and harsh.
so thats what you did to my car when you lowered it:

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      10-03-2019, 06:13 PM   #50
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Quote:
Originally Posted by Vic55 View Post
Quote:
Originally Posted by r33_RGSport View Post
If the installer remove the bump stop, then yes, you are at risk for blowing the shocks.

The bump stop as its named after, is to stop the full bump which to avoid the shock to bottoms out.
You will notice it if you are riding on the bump stop at all time.
The ride will be very very stiff and harsh.
so thats what you did to my car when you lowered it:

Shhh...
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      10-06-2019, 08:44 AM   #51
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Quote:
Originally Posted by Vic55 View Post
Well it was either just being lazy and not caring enough or the constant reminders from: EDDYFIG and josec70 but I swapped out the F90's for the M550i's.

The drop is clearly stronger/lower in the rear and even the front is slightly lower. I got a chance to drive it thru some pretty curvy roads on the way home for about 40 miles and the car dynamics in regards to compression and rebound are pretty much equal to the F90. Im glad I did it and yes it took a while but when I did the F90 springs over a year ago- the M550i springs were not being done by enough owners for me to take a chance. I still am a bit angry at H&R for showing a drop of 1.2/1.2 on their site for the F90 set up. Why not just say it like it is: 1.2/0.6 .... anyways I digress cause Im happy.

Big shout out to Ben at RG Sport who sourced the springs in 24 hours and did the install in about 3. Very fast, professional, and extremely price aggressive. r33_RGSport Thanks again Ben and Ill be over there soon for more mods.
Looks great......how many hours labor did they charge you for installation
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      10-07-2019, 08:33 AM   #52
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Vic55. Very nice look. I have been contemplating the same. Can you confirm that this was done with the H&R springs for the 550i, and NOT the OEM spring kit for same.....

Thanks!!
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      10-07-2019, 10:09 AM   #53
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Quote:
Originally Posted by Steeve19M5CP View Post
Looks great......how many hours labor did they charge you for installation
My labor was via a close contact so he just charged the net work time which was short of 3 hours.

Quote:
Originally Posted by F90Driver View Post
Vic55. Very nice look. I have been contemplating the same. Can you confirm that this was done with the H&R springs for the 550i, and NOT the OEM spring kit for same.....

Thanks!!
100% M550i springs.
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      10-29-2019, 12:10 PM   #54
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another view
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      10-29-2019, 12:15 PM   #55
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Quote:
Originally Posted by Vic55 View Post
another view
That is perfect! Do you know if your wheels and the competition wheels are the same offset by any chance?
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      10-29-2019, 12:23 PM   #56
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Quote:
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That is perfect! Do you know if your wheels and the competition wheels are the same offset by any chance?
One and the same

20x9.5 ET 28
20x10.5 ET 28
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      10-29-2019, 12:29 PM   #57
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Quote:
Originally Posted by Vic55 View Post
One and the same

20x9.5 ET 28
20x10.5 ET 28
Cool thanks
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      11-11-2019, 12:38 PM   #58
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Where is the best online source to purchase these springs and spacers? My M5 Comp arrives at the end of the month and I want to buy the parts before it arrives. TIA!
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      11-11-2019, 12:47 PM   #59
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Where is the best online source to purchase these springs and spacers? My M5 Comp arrives at the end of the month and I want to buy the parts before it arrives. TIA!
This is where I got my parts:

https://www.rgsportshop.com/

It might be easier to call Ben there or PM here

r33_RGSport
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      11-11-2019, 01:04 PM   #60
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Quote:
Originally Posted by Vic55 View Post
This is where I got my parts:

https://www.rgsportshop.com/

It might be easier to call Ben there or PM here

r33_RGSport
Thanks! Ordered!
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Last edited by dubd; 11-11-2019 at 02:17 PM..
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      11-11-2019, 02:41 PM   #61
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Quote:
Originally Posted by Vic55 View Post
This is where I got my parts:

https://www.rgsportshop.com/

It might be easier to call Ben there or PM here

r33_RGSport
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Quote:
Originally Posted by dubd View Post
Thanks! Ordered!
Thank you for your business.
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      11-11-2019, 02:47 PM   #62
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Quote:
Originally Posted by r33_RGSport View Post
Thank you for your referral.
I owe you one beer.



Thank you for your business.
Ummmmm make it 6 or wheels...
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      11-11-2019, 03:03 PM   #63
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Quote:
Originally Posted by Vic55 View Post
Quote:
Originally Posted by r33_RGSport View Post
Thank you for your referral.
I owe you one beer.



Thank you for your business.
Ummmmm make it 6 or wheels...
I'll get you a case from Costco, how's that? Haha.
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      11-19-2019, 02:27 PM   #64
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car looks fresh Vic ! how much stiffer is the ride vs stock?
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      11-19-2019, 03:57 PM   #65
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Quote:
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car looks fresh Vic ! how much stiffer is the ride vs stock?
Why would the ride be stiffer? Stock 550i springs for a car that probably weighs slightly less than the M5, and isn't a performance model from BMW, would more than likely have a lower spring rate.
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      11-19-2019, 05:54 PM   #66
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Quote:
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Why would the ride be stiffer? Stock 550i springs for a car that probably weighs slightly less than the M5, and isn't a performance model from BMW, would more than likely have a lower spring rate.
Weight is close but as you stated the rates could be higher on the M5 but then again these are aftermarket springs not OEM where we could check part numbers on the F90 vs the G30. The dampers really have alot of control here and Im actually down to Sport now vs. Sport Plus because the drop is more aggressive than stock or the F90 H&R's.

prodigymb

Id say its more bouncy on bad undulations for sure as the compression and rebound distances have been reduced and that hinders the damper. But the gain in form is great and in reality the OEM springs are bouncy too IMHO. On flat surfaces- the springs are great in Sport and the car feels fine.
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