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BMW 3-Series (E90 E92) Forum
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Bump stops
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05-18-2020, 10:40 AM | #1 |
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Bump stops
Hello all. I was swapping my summer wheels and tires on today and noticed the bump stop is falling apart as it's more like the letter "C" then the "O" it is supposed to be. Not really interested in pulling my suspension apart to fix a bump stop(didn't check others as I noticed this swapping my last rim). I suppose I could try to clean and tape it while on the car, but thinking that will be a big waste of time as I don't think tape will hold up. Anyone have any experience or expertise regarding these stupid things? Am I okay to just remove them all? Seems the dust cap is below the bump stop so I don't think they say keep dirt and debris out. My brother suggested I just pull the fronts so it is symmetrical. My car is a 328xi with kW coil overs. Thanks in advance.
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05-18-2020, 11:37 AM | #2 |
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I'd leave them until they fall off. They protect your struts from bottoming out. Something is better than nothing.
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS |
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OnlyDriveGerman179.00 |
05-18-2020, 11:39 AM | #3 |
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That makes sense but part of me thought there is no way those springs would ever get fully compressed so it wouldn't matter if they are there or not. Thanks for the feedback.
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05-18-2020, 01:42 PM | #4 | |
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Cut off the old ones. You can slice open new ones and get them on. Put 2-3 zip ties around the bump stop to keep it clamped in place. Should work fine without needing to remove the strut from the car. Just might be difficult to get the bump stop between the spring. |
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OnlyDriveGerman179.00 |
05-18-2020, 03:28 PM | #5 | ||
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05-18-2020, 09:10 PM | #6 | |
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS |
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OnlyDriveGerman179.00 |
05-20-2020, 08:19 PM | #7 |
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Yea new bump stops made a huge difference in my car. Mine disintegrated and I was rubbing/bottoming out a lot. Ordered some new ones, used a razor knife to cut down the side, and got them on that way. Wasn’t too hard.
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OnlyDriveGerman179.00 |
05-24-2020, 10:39 AM | #8 |
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Interesting, how long have they stayed on like that?
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05-24-2020, 05:29 PM | #9 |
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Put them on around 1k miles before I sold the car. You could probably superglue or epoxy the cut to be safe. There was no way I was going to take the spring off again to do it. Also, I figured cutting more at an angle rather than straight might help it stay on better when it’s compressed.
It’s pretty easy to get them on. What I did was jack the car up, first using the cut side get the bump stop sideways around the spring where you’ve got the biggest gap, spin it around so you can pull it off inside the spring, squish and turn it right side up, and then push around the shock. Took a minute or two each side. |
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