05-16-2015, 03:25 PM | #1 |
Second Lieutenant
38
Rep 234
Posts |
Hydrobearing replacement with M3 one
Hi Everyone,
Has anyone tried to replace the front hydrobearing (in traction strut) using the M3 one? I know the rear axle of the X1 can be upgraded using M3 parts (including subframe bushings), but the front axle is quite different and we can't swap parts. That said, it seems to me the M3 hydrobearing could fit the traction struts of the X1. So i'm curious if someone here has tried. Hydrobearing of the X1 (green): And the same part on a E82, on which the M3 hydrobearing fits: Thank you.
__________________
2018 M550i Sepia-Violet
Last edited by NTTY; 05-16-2015 at 03:30 PM.. |
05-18-2015, 07:28 AM | #2 |
Colonel
842
Rep 2,411
Posts |
The 335xi and 335i part numbers are different. This at least leads me to believe that the M3 bearing won't be a direct fit.
But to help your search, search for posts on the E90 forum regarding 335xi bushing/control arm replacement options. As a general rule, our chassis is pretty much all 335xi. |
Appreciate
0
|
05-18-2015, 11:08 PM | #3 |
Second Lieutenant
38
Rep 234
Posts |
Thank you for your reply, but I searched before posting here and I failed finding someone who has tried this.
Anyway, I ordered the two parts, the X1 and M3 hydrobearings, so I'll be able to compare them. Crossing fingers now. Cheers.
__________________
2018 M550i Sepia-Violet
|
Appreciate
0
|
05-19-2015, 02:04 PM | #6 |
Unllicensed
29
Rep 444
Posts |
I don't see why you'd bother, unless your original bushings are worn. Even then. OTOH, since most manufacturers use a process to increase commonality of small components, maybe it'll fit. GL
|
Appreciate
0
|
05-19-2015, 02:17 PM | #7 | |
Colonel
842
Rep 2,411
Posts |
Quote:
While I don't think it will fit (again the 335i part isn't the same as the 335xi part), that bushing (along with the rear subframe bushings) is one of the biggest contributors to the soft/rubber-bandy nature of non-M E80/90 chassis. Big changes to the handling at the limit replacing that one and a couple in the rear on other cars. |
|
Appreciate
0
|
05-19-2015, 02:24 PM | #8 |
Colonel
842
Rep 2,411
Posts |
Lots of guys run these, instead of doing full M3 arm swaps on their E82s and E90s...
http://www.hpashop.com/product.sc?pr...categoryId=175 Nice improvement. |
Appreciate
0
|
05-19-2015, 02:25 PM | #9 |
Colonel
842
Rep 2,411
Posts |
OP: Not sure you can trust it...
http://www.e90post.com/forums/showthread.php?t=588035 But post #20 claims they won't fit. But maybe that's because they didn't try and just went by part number. |
Appreciate
0
|
05-19-2015, 03:13 PM | #10 |
Second Lieutenant
38
Rep 234
Posts |
That's my guess. Other possibility is that those of the M3 would need some work to fit. I'll be sure when I have them.
PS: I changed all bushings of my 135i for those of the M3 or Motorsport when M3 ones did not fit. Amazing improvements...
__________________
2018 M550i Sepia-Violet
|
Appreciate
0
|
05-19-2015, 03:17 PM | #11 |
Second Lieutenant
38
Rep 234
Posts |
The original bushings are way too soft. M3 ones should be a minimum since they don't generate more noise and make the car much sharper and enjoyable.
__________________
2018 M550i Sepia-Violet
|
Appreciate
0
|
05-19-2015, 04:53 PM | #12 |
Unllicensed
29
Rep 444
Posts |
OK, makes sense. I don't drive mine aggressively, so I don't have the same priorities. I like strong acceleration, but I won't make mine into a road racer.
|
Appreciate
0
|
06-20-2015, 12:01 PM | #13 |
Second Lieutenant
38
Rep 234
Posts |
Hi everyone,
Update here, they fit Stock hydrobearing: And M3 bushing: The M3 one is 4mm longer, so my mechanic had to shorten it by 2mm on each side. Diameter is the same when pressed for insertion. Note that stock hydorbearing hole is eccentric (not sure it translate) while M3 one is not. It is the same story on non-xDrive car, though. Here below the hydrobearing of an E8x/E9x non-xDrive: This means that the caster is changed a bit, but it has no significative impact behind the wheel (it had more impact on my 135i). In addition, note the tension strut is bigger on the X1 than on a M3, so you have to center the M3 bushing inside: See the difference with the M3 arm (and the additional bushing I've put on the X1): It is a pain to fit it in. My mechanic had to build a specific tool, but I guess BMW should have that kind of tool. Anyway, they went on my car, with other mods I'll talk about soon, and the difference is the same I felt on m 135i when going M3 arms, better precision of the front axle, especially when braking hard. And talking about brakes, by the way, M3 front pads fit on my X1 20i (same brakes on the 28i I believe), so I went with the new Pagid RSL pads, and that makes an amazing combination...
__________________
2018 M550i Sepia-Violet
Last edited by NTTY; 06-20-2015 at 04:41 PM.. |
Appreciate
0
|
06-20-2015, 04:50 PM | #15 |
Second Lieutenant
38
Rep 234
Posts |
Hi,
Sure, but no real link to provide you with. The references for Pagid are: - 8053 (those of the M3 E9x) for front axle - 8035 for rear axle (will fit a lot of BMW) Pagid makes those pads in different friction for road and track. I wanted the RS29 that I have on my 135i but they seem to be out of stock everywhere, so I went with the newer RSL1, still from the yelllow (endurance) line. They do a heel of noise though, so I hope they'll be quiet soon. Note that we had to perform minor adjustments to make them fit. Nothing major, and nothing a good mechanic can do easily. So basically, if you can't find a specific pad for the front axle of the X1, you can safely go with those of the M3 from whatever brand you want.
__________________
2018 M550i Sepia-Violet
|
Appreciate
0
|
08-24-2015, 10:40 PM | #16 |
Lieutenant Colonel
1013
Rep 1,563
Posts |
I am going to be trying this next week. I think my stock bushings are shot. Are you still happy with this? There are some other bushings available that are poly by strongflex, trying to decide between those and the M3 ones.
|
Appreciate
0
|
08-25-2015, 09:54 PM | #17 |
Lieutenant Colonel
1013
Rep 1,563
Posts |
I decided to go with these bushings over the M3 ones - they are a bit more expensive but should deflect less and have an option specifically made for the xdrive cars. I am hoping they fit with no modification as the part number on the X1 is shared with the 335i xdrive.
I also ordered the M3 Strut Tower Brace kit from HPA Autosport. |
Appreciate
0
|
08-26-2015, 05:47 AM | #18 | |
Colonel
842
Rep 2,411
Posts |
Quote:
__________________
'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) |
|
Appreciate
0
|
08-26-2015, 08:33 PM | #19 |
Lieutenant Colonel
1013
Rep 1,563
Posts |
|
Appreciate
0
|
08-27-2015, 06:46 AM | #21 |
Colonel
842
Rep 2,411
Posts |
Really pisses me off in general. Is the average customer in any way offended by the bit of increase in road feel decent FCA bushings add to the car? There was absolutely no reason that the regular E90s needed different front bushings vs. the M3. They really junked up the handling of the car when hustling...so much windup/rebound/deflection it's ridiculous. The E36 and E46 never had these issues. No damn reason for it.
__________________
'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) |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|