10-28-2015, 09:05 AM | #199 |
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I am doing the install myself. I'm waiting for the bilstein's to arrive and I am going to install the rear m3 sway bar, shocks, HR springs, subframe inserts and also brake discs and pads. This should be a fun weekend project when everything is here. Should I change the rear sway end links??? I've seen both yes and no.. So I'm not sure on this one yet.
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10-28-2015, 11:20 AM | #200 |
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OE endlinks worked fine for me. Apparently if you go very low, they wind up being too long. But with just the H&Rs, plenty of room to use the stockers.
While it was tough, and I'd catch flack for it on most forums, I did the swaybar and bushings without disconnecting the brake lines by the subframe, and just making due with the little travel they provided before being stretched too far. Worked on both the X1 and my 135. Probably a good idea to disconnect them...but it can be done. Helps to have two guys for the rear sway though, as it requires a lot of pushing and shoving to get into place with such limited room.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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10-28-2015, 09:22 PM | #201 | |
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10-29-2015, 09:32 AM | #202 | |
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Stock endlinks will be fine with the M3 bar. As for the part number, use realoem.com if you need the number. I used an E93 M3 (vert) bar in the rear, as it's slightly thicker than the sedan/coupe rear bar. You'll also need the bushings/bracket. Turner motorsports sells the M3 rear bar upgrade, along with bushings, but it's cheaper to look for one on ebay, etc. (I spent like $130 on an old vert rear bar with the bushings). Keep in mind when searching turner, etc. just use an E90 335 xdrive as your car. None of these parts/upgrades will show up if you use an X1. Front swaybars from RWD E90s don't fit. The only option for a front bar on any of these xdrive cars as far as I know is a UUC E90 xdrive bar.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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10-29-2015, 10:47 AM | #203 | |
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Some part numbers...there's more earlier in the thread...
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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10-29-2015, 08:09 PM | #204 | |
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10-29-2015, 08:59 PM | #205 | |
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Sway Bar (BMW OEM): E90 M3 rear sway bar - 33552283655 Rear Sway Bar Bushing Bracket (x2) - 33552283714 Top Sway Bar Bushing (x2) - 33552283710 Bottom Sway Bar Bushing (x2) - 33552283709 |
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10-29-2015, 09:56 PM | #206 |
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All the same out back.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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10-29-2015, 09:59 PM | #207 | |
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The E90 bar is fine, but if you're buying new, no reason not to go with the bigger E93 bar. Then again, with not much available up front, perhaps going milder in the rear isn't a bad thing.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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11-01-2015, 07:13 AM | #210 |
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You should use stock ones, but IIRC, paradoxical used GD chassis ones...so yeah, 07. But he'll have to chime in.
Again, unless you're really low on coilovers, you don't need them. And even then, I've never heard of anyone else on coilovers needing anything but stock.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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11-24-2015, 12:11 AM | #211 |
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Got the rears today, fronts show up tomorrow! Will install tomorrow as well.
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'15 E84 X1 35i M Sport MPI DME Flash - K&N drop in - MPI Chargepipe - Oil T-stat valve - ETS 5" I/C - N54tuning 3.5" downpipe - catless mid section - Dinan 135i rear exhaust - Apex ARC8 18x9/10(255/295 tires) - H&R Sports - Bilstein B6's - F3x M Performance brakes '02 E39 530i 624whp/558ft-lbs @23psi |
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11-24-2015, 04:55 AM | #212 |
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Just for a rough idea on my behalf....
That white x1 on the black bbs looked sweet! Are there any photos of an X1 with H&R Springs & B6 Struts on 19" wheels? |
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11-24-2015, 07:49 AM | #213 |
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I'd cut the front internal bumpstops if I were you, not worth the risk of not enough travel. Takes all of 5 minutes.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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11-24-2015, 02:43 PM | #214 |
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Doing that right now!
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'15 E84 X1 35i M Sport MPI DME Flash - K&N drop in - MPI Chargepipe - Oil T-stat valve - ETS 5" I/C - N54tuning 3.5" downpipe - catless mid section - Dinan 135i rear exhaust - Apex ARC8 18x9/10(255/295 tires) - H&R Sports - Bilstein B6's - F3x M Performance brakes '02 E39 530i 624whp/558ft-lbs @23psi |
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11-25-2015, 07:12 PM | #215 |
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Got them in last night after work.
Trimmed the front internal bump stops as PrematureApex did (Cut them in half, then cut the one that fits the shock shaft snug in half and stacked them back together, THIS IS A MUST. Travel is increased by a little over an inch) For the rear, I used non sport bump stops and cut the lower half and was still able to get the dust boot on. I do wish Bilstein would man up and offer a B8 for the X1, I feel the struts/shocks are still too long for the lowering springs(when compared to when we do other BMWs with H&R's and B8s) BUT nonetheless, the ride is MUCH improved. My ride home was way more enjoyable then ever. Feels a lot more planted with the the road around corners. I may do the M3 rear sway bar if I can pick one up from a friend who builds them for road coursing. Girlfriend also approves of the ride quality now. The ride height did not change as someone stated somewhere, shocks to don't dictate ride height. You also must PRELOAD your suspension bushings when doing lowering springs, I know a lot of people and shops who have no idea what that term means and what it can do for longevity of the control arm bushings.
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'15 E84 X1 35i M Sport MPI DME Flash - K&N drop in - MPI Chargepipe - Oil T-stat valve - ETS 5" I/C - N54tuning 3.5" downpipe - catless mid section - Dinan 135i rear exhaust - Apex ARC8 18x9/10(255/295 tires) - H&R Sports - Bilstein B6's - F3x M Performance brakes '02 E39 530i 624whp/558ft-lbs @23psi |
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11-26-2015, 06:49 AM | #216 | |||
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I posted a link to Bilstein's own FAQ stating that some amount of additional ride height is normal, here... Quote:
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) Last edited by PrematureApex; 11-26-2015 at 06:59 AM.. |
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11-26-2015, 10:21 AM | #217 |
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Can you explain "You also must PRELOAD your suspension bushings when doing lowering springs, I know a lot of people and shops who have no idea what that term means and what it can do for longevity of the control arm bushings."
Do you mean raising the height of the suspension to normal ride height when tightening down the shocks struts? |
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11-26-2015, 03:48 PM | #218 | |
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You could also raise the arm to ride height, loosen the control arm bolts associated with a rubber bushing sufficiently such that they can "unwind", the tighten them back down. Just playing with the loose arm, they didn't have lot of bind over a significant range of upward travel, so while it's a good sound practice, don't lose sleep over it if you didn't do it.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
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11-26-2015, 10:16 PM | #219 |
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Do you have a pic that shows how much travel you have on the rears before the shortened non sport bump stops engage?? Mine, with H&R springs, Bilstein B6s, and Z4 rear bump stops started off with a 1/2" gap when I first installed the Bilsteins, and now after they have settled have less than a 1/4" gap. I'm tempted to try the non sport bump stops to see if that removes that last bit of bounce out of the rear.....
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11-26-2015, 10:31 PM | #220 | |
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But anyways, she rides better now. I know there is more to be desired if they had shorter shocks like a B8.
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'15 E84 X1 35i M Sport MPI DME Flash - K&N drop in - MPI Chargepipe - Oil T-stat valve - ETS 5" I/C - N54tuning 3.5" downpipe - catless mid section - Dinan 135i rear exhaust - Apex ARC8 18x9/10(255/295 tires) - H&R Sports - Bilstein B6's - F3x M Performance brakes '02 E39 530i 624whp/558ft-lbs @23psi |
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