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BMW 3-Series (E90 E92) Forum
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Help with Bilstein B8/H&R Springs install
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04-24-2020, 05:54 PM | #1 |
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Help with Bilstein B8/H&R Springs install
So this morning I began what I thought would be a pretty basic install......and now I'm stuck.
Here's the rundown on the vehicle. Its a 2009 335xi (E90). I was able to get the old struts out easy enough, however no matter what I do I cant get the B8's to slide into the spindle. They appear to hit a lip near the bottom of the spindle and stop. I've tried lightly greasing the spindle, I have tried heating it and using a pry bar to open the spindle up further without any luck........On every install video I have seen they just seem to slide in?! Anyone run into this before? Any suggestions. Thanks in advance. Mike |
04-24-2020, 06:01 PM | #2 |
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If I remember rightly, there's a special BMW tool for spreading the spindle...at least for the RWD cars. You can get away without it though.
What I did, was mount the top of the strut, then jack the hub/spindle up onto it...while prying the spindle open a bit and making sure it all stays straight etc. One of my spindles is tight, the other one is loose and pretty easy to install by hand. Both original, factory, BMW parts. Also remember to ensure that whatever alignment feature there is on the strut aligns properly with the gap in the spindle. |
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04-24-2020, 06:04 PM | #3 | |
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04-24-2020, 06:17 PM | #4 |
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Have you compared the new struts with the old ones? Overall length, and diameter at the spindle mating surface? Remember there's no such thing as factory sport suspension on an x; they just have sport trim/bodywork/etc and the suspension is unchanged from non-sport.
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04-24-2020, 06:40 PM | #5 | |
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I thought there was no factory m-sport suspension changes either, until earlier this year I tried to put B4's on the rear and they were way too long, a switch to the ones required for "sports suspension" (B8's which approximately 1.5" shorter) fit perfectly. |
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04-24-2020, 07:23 PM | #6 |
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I used the Schwaben spindle spreader tool to open things up and that worked well... I am also on an XI (e92) and was installing Koni's. I would be cautious about applying grease in that area because you'll ultimately want a pressure fit with no movement.
I did need to jack the hubs up though to get the struts to fully seat. I let the hub hang pretty low by using a floor jack to lower it slowly, seated the bottom of the strut into the hub as far as I could, then mounted the top, jacked up the hub and that got the struts seated the rest of the way. There was definitely a difference in how far the struts were seated before and after I jacked up the hub - I wouldn't have been able to get them in all the way without doing this. I was initially concerned about letting the hub hang too low causing pressure on the front axle CV joints but there was more room for flexibility there than I thought. Just go slow and use a jack or something to support the hub from under the brake rotor. |
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04-24-2020, 09:35 PM | #7 | |
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04-24-2020, 09:48 PM | #8 | |
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04-24-2020, 09:50 PM | #9 | |
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Mike |
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04-25-2020, 03:24 AM | #10 |
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04-25-2020, 11:34 AM | #11 |
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Yes - sorry I may have misread the earlier post... this nut does need to be fully tightened/torqued to spec. You may need to compress the springs further to do so if you didn't fully compress them when installing them over the strut the first time.
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04-25-2020, 01:50 PM | #13 |
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After taking a look at the parts this morning. I knew something had to be wrong. When i compared them to the stock struts, I knew the parts were the problem.
I purchased these struts online and realized the site part numbers for Bilstein B8's although correct for my vehicle on the vendor website, are not correct for my vehicle according to Bilstein....hence the poor fitment. I have reached out to the vendor and hoping they will make things right. Thanks to everyone who replied. Once I confirm the proper part #s I will post them to help prevent anyone from making the same mistake as I did. |
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04-25-2020, 04:37 PM | #14 | |
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Yikes... well, glad you figured out the issue. What vendor did you purchase from? |
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04-26-2020, 01:26 PM | #15 | |
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Avoid this site at all costs......a very expensive mistake on my part as they refuse to take the struts back. |
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04-26-2020, 01:35 PM | #16 |
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Surely that's mis-sold, and therefore they have to issue a refund. They said they'd fit, but they don't; their mistake. Not sure what distance selling regs etc are like in the US...
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