Suspension Questions

SwissArmy · 06-06-2016, 08:37 AM

Hello everyone,

Due to the harsh ride of H&R springs on stock struts/shocks, I am either going to ditch them for stock springs OR get proper struts/shocks to accommodate the lowering springs.

Question 1:
My front springs' part number: 6757781 (31336757781). What would be the matching rear spring part number be? I tried realoem.com but it does not list part numbers for springs.

Question 2:
If I were to keep my H&R springs, what struts/shocks would you recommend? I would like to keep the harsh ride to a bare minimum. Kills my back lol

Help please.

Thanks

SwissArmy · 06-07-2016, 06:26 AM

bump (edited first post with a second question)

Steeler · 06-07-2016, 03:28 PM

Chances are you have blown the stock dampers with those springs.
I can recommend Koni Yellows. Not cheap but IMO the best for lowered suspension.

inTgr8r · 06-07-2016, 03:30 PM

^whs
OE dampers don't last long with aftermarket springs

SwissArmy · 06-07-2016, 04:48 PM

Quote:

Originally Posted by dbarton62

Chances are you have blown the stock dampers with those springs.
I can recommend Koni Yellows. Not cheap but IMO the best for lowered suspension.

Quote:

Originally Posted by inTgr8r

^whs
OE dampers don't last long with aftermarket springs

Done and done. Just ordered myself a set. Thanks guys. Appreciate it.

coh661 · 06-13-2016, 04:41 PM

I did the ol "stock dampers with H&R springs" and I agree not a good setup. Especially since my stock dampers already has 50k miles on them. I'll be replacing my dampers soon with Bilstein HD's. I hear that's a good combination. Coilovers are a bit overkill for me and the H&R's give me the perfect ride height for my taste.

06-06-2016, 08:37 AM	#1
SwissArmy Why so serious? 141 Rep 743 Posts Drives: BMW Z4; BMW X5; BMW 733 Join Date: Dec 2012 Location: Toronto iTrader: (1)	Suspension Questions Hello everyone, Due to the harsh ride of H&R springs on stock struts/shocks, I am either going to ditch them for stock springs OR get proper struts/shocks to accommodate the lowering springs. Question 1: My front springs' part number: 6757781 (31336757781). What would be the matching rear spring part number be? I tried realoem.com but it does not list part numbers for springs. Question 2: If I were to keep my H&R springs, what struts/shocks would you recommend? I would like to keep the harsh ride to a bare minimum. Kills my back lol Help please. Thanks Last edited by SwissArmy; 06-07-2016 at 06:46 AM..
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06-07-2016, 06:26 AM	#2
SwissArmy Why so serious? 141 Rep 743 Posts Drives: BMW Z4; BMW X5; BMW 733 Join Date: Dec 2012 Location: Toronto iTrader: (1)	bump (edited first post with a second question)
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06-07-2016, 03:28 PM	#3
Steeler Colonel 2429 Rep 2,704 Posts Drives: Built not Bought 04 Z4 VF Join Date: Feb 2013 Location: Kitchener Ontario Canada iTrader: (2)	Chances are you have blown the stock dampers with those springs. I can recommend Koni Yellows. Not cheap but IMO the best for lowered suspension. __________________ W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
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06-07-2016, 03:30 PM	#4
inTgr8r Lieutenant General 2432 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	^whs OE dampers don't last long with aftermarket springs __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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06-13-2016, 04:41 PM	#6
coh661 Banned 191 Rep 453 Posts Drives: 2007 Z4M Coupe Join Date: Dec 2015 Location: WY iTrader: (4) Garage List 2007 Z4 M COUPE [8.00]	I did the ol "stock dampers with H&R springs" and I agree not a good setup. Especially since my stock dampers already has 50k miles on them. I'll be replacing my dampers soon with Bilstein HD's. I hear that's a good combination. Coilovers are a bit overkill for me and the H&R's give me the perfect ride height for my taste.
	Appreciate 0 Quote