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BMW 3-Series (E90 E92) Forum
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How important are the bump stops
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10-30-2018, 02:17 PM | #1 |
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How important are the bump stops
Hey everyone, relatively new to the forum, with a e93.
I've noticed upon replacing the wheels that the bump stops on the shocks/struts are crumbly and basically non existent. I've done about 3000 miles so far and no problems, but I'm wondering if theres a potential to do damage? Without the bump stops what limits suspension travel, the shocks? I'm also on sports suspension Thanks in advance |
10-30-2018, 02:28 PM | #2 |
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Drives: 09 E90 335i M-Sport 6MT RWD
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Bump stops are there to soften the end of the travel so its not a harsh bottom out at the end of the stroke/travel.
Your car won't catch fire without them but its very much so a good idea to have them. It will be uncomfortable and may shorten the life of your shocks without it (depending on your terrain of course). Last edited by neilvan; 10-30-2018 at 02:43 PM.. |
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10-30-2018, 02:40 PM | #3 |
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Drives: 06 330i E90, 18 530xe G30
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I attempted to DIY a lowering spring perch on my own. It was a frustrating experience that I bailed mid way through, in my haste to put my front strut together I forgot to install my bump stop (driver side). I drove without one for about a few months and absolutely cringed every-time I hit a large bump that bottomed out the travel. I was convinced I was doing permanent alignment damage every time it happen. Not long after I my front shock completely failed and started to leak heavily. I was convinced it was because of the bottoming out damage, maybe it was coincidence but I doubt it.
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10-31-2018, 01:37 PM | #4 | |
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Quote:
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2006 330i 6MT Jet Black / Black
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10-31-2018, 06:09 PM | #5 | |
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Strut Bumpers are a LOT cheaper than new struts: $10.30 ea. for Febi Bilstein & $20.45 ea. for Genuine BMW: https://www.autohausaz.com/pn/FB-31336777636 https://www.getbmwparts.com/oem-part...er-31336777636 Those are BMW part# 31336777636 which is correct for my 328xi E91. You should check RealOEM.com to get the correct part# for your E93 335i. Of course the lower profile tire/larger dia wheel you have, the MORE severe the rebound, as well as potential damage to the wheel by the pothole. ANYONE have a good, easy method on how to inspect those Bumpers (I assume just jack the body on that corner, let the wheel hang down & use a mechanic's mirror & light if necessary to see up the strut shaft under the dust cover)? George |
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Today, 09:56 AM | #6 |
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Reviving this thread as mine are completely dust. Has anyone successfully gotten a lasting solution by cutting the bumper and and sealing the cut with foam glue or another flexible adhesive safe for foam? Given I put 1000 mostly highway miles on my car a year, removing the strut solely for the purpose of replacing the bumper seems like an excessive amount of labor... not to mention the accompanying alignment thereafter.
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