Time for a suspension overhaul...

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  • Strelok
    Wrencher
    • Jan 2010
    • 280

    #1

    Time for a suspension overhaul...

    So my recently purchased '87 325i needs an entirely new suspension. I've been trying to figure out what setup to use, and I came across this: http://www.tirerack.com/suspension/s...3.1&perfCode=P I know H&R is a good brand and lots of people use their springs, but I'm a little worried about those shocks. I originally wanted Bilsteins, and these are just "custom valved shocks" it doesn't even give a brand name.
    Opinions?
  • HarryPotter
    No R3VLimiter
    • Jan 2010
    • 3642

    #2
    Don't get a cup kit, get billies or konis, and h&r sports or race springs. If you have money get GC coils.

    If you like negative rake get IE springs.


    "Its preparations are concealed, not published. Its mistakes are buried not headlined. Its dissenters are silenced, not praised. No expenditure is questioned, no rumor is printed, no secret is revealed."

    John F. Kennedy

    Comment

    • kencopperwheat
      King of Kegstands
      • Oct 2003
      • 14396

      #3
      The cup kit springs are soft and low so the shocks are matched to them.
      Originally posted by Gruelius
      and i do not know what bugg brakes are.

      Comment

      • Nic01101011
        E30 Mastermind
        • Jan 2008
        • 1549

        #4
        If I had to do it all again I'd go with H&R sports and bilstein sports. Most important thing I think is to replace every single bushing and wear item in the suspension, though.

        Comment

        • Strelok
          Wrencher
          • Jan 2010
          • 280

          #5
          OK, what about Bilstein sport struts plus Eibach sport springs (front: 1.6 rear: 1.4)? I want Bilsteins and I like my low ride height but I want to make sure the setup I have is more or less matched and isn't putting unnecessary strain on the struts. That's what's attractive about that cup kit; it's engineered specifically to function together. But I want my Bilsteins...

          Comment

          • kencopperwheat
            King of Kegstands
            • Oct 2003
            • 14396

            #6
            Cup kit is for show more than anything. It's really low, but really soft.

            I'd go with H&R Race + Bilstein Sport.
            Originally posted by Gruelius
            and i do not know what bugg brakes are.

            Comment

            • iamsam
              Advanced Member
              • Jun 2008
              • 172

              #7
              i can vouch for the H&R Race + Billy Sport setup. Unless you want to do coilovers.

              Comment

              • Jean
                Moderator
                • Aug 2006
                • 18228

                #8
                H&R Sports are too soft and not a good match with bilstein sports honestly. I've had I think 4 or 5 different springs/shocks on the car and H&R Sports with Bilstein Sports are good when the road is smooth, but they bottom easily on pot holes or road junctions. I would go with stiffer springs or coilovers.

                Very important to replace all the damn worn out components first (Subrame bushings, Trailing Arm bushings, upper rear shock bushings, front strut bushings, lower control arm bushings (and possibly control arms and/or tie rods if they are old/worn)). Get a good set of tires and alignment. Bilstein or Koni inserts off the shelf are good, it's just when you have soft springs that lower the car you are risking riding on bump stops....same goes if you lower the car too much on soft coilovers. The lower you go the stiffer the rates should be, and off the shelf (not custom valved) shocks can only take so much.

                Cup Kits are notorious for being too low and too soft, not only on BMWs, but in general.
                Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



                OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

                Comment

                • Jean
                  Moderator
                  • Aug 2006
                  • 18228

                  #9
                  Originally posted by HarryPotter
                  Don't get a cup kit, get billies or konis, and h&r sports or race springs. If you have money get GC coils.

                  If you like negative rake get IE springs.
                  The rake is not so much due to springs but the way late model cars LOOK lowered since the rear arches are LOW.
                  Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



                  OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

                  Comment

                  • Strelok
                    Wrencher
                    • Jan 2010
                    • 280

                    #10
                    Alright, so I'm trying to order everything from Pelican, but it's saying that the H&R race springs are strictly for the M3. What's the deal with that?

                    Comment

                    • HarryPotter
                      No R3VLimiter
                      • Jan 2010
                      • 3642

                      #11
                      Originally posted by Jean
                      The rake is not so much due to springs but the way late model cars LOOK lowered since the rear arches are LOW.
                      I know this, it still gives the visual appearance of neg. rake.

                      They still don't lower the car nearly as much as I like for my taste. They drop it maybe, MAYBE two inches. I need at least no wheel gap for me to be happy.


                      "Its preparations are concealed, not published. Its mistakes are buried not headlined. Its dissenters are silenced, not praised. No expenditure is questioned, no rumor is printed, no secret is revealed."

                      John F. Kennedy

                      Comment

                      • Jean
                        Moderator
                        • Aug 2006
                        • 18228

                        #12
                        Strelok - they are not only for e30m3s.

                        HarryPotter - Function > Form.
                        Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



                        OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

                        Comment

                        • HarryPotter
                          No R3VLimiter
                          • Jan 2010
                          • 3642

                          #13
                          Originally posted by Jean
                          Strelok - they are not only for e30m3s.

                          HarryPotter - Function > Form.
                          That may be true for some, it isn't for me. I don't race my car anywhere, be it the street the track whatever. So for me to care about such things would be a waste of time and visual appeal. I like the way my car looks regardless if my COG is off.


                          "Its preparations are concealed, not published. Its mistakes are buried not headlined. Its dissenters are silenced, not praised. No expenditure is questioned, no rumor is printed, no secret is revealed."

                          John F. Kennedy

                          Comment

                          • Strelok
                            Wrencher
                            • Jan 2010
                            • 280

                            #14
                            I can't seem to find any sites selling race springs advertised as being for 325i's. They all say M3. Is there a difference? Where have other members gotten their springs?

                            Comment

                            • downernsp
                              E30 Mastermind
                              • Mar 2008
                              • 1932

                              #15
                              Originally posted by Strelok
                              I can't seem to find any sites selling race springs advertised as being for 325i's. They all say M3. Is there a difference? Where have other members gotten their springs?
                              Same thing link http://www.turnermotorsport.com/html...0&subcat_id=63

                              Also one should first specify what is over all goel street,street/track, or full race. Like that one can tell you exactly what works. There are a ton of people on this board with all sets. Good luck with decision.
                              Last edited by downernsp; 01-08-2010, 07:51 PM. Reason: fixed sentence
                              Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                              Comment

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