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#21
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At any rate, the "ball joints" that are in the "control arms" are usually sub assemblies that are non-serviceable. But I do think there is a way to service the rubber bushings in them sometimes.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
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#22
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Thanks for speaking up for some clarification. I actually typed in a much shorter, similar request that would have been post #2, but decided to delete it.
BTW, everyone, please note that diagrams are great, part numbers great too (for google purposes so others can find your great info months or years down the road), and also that "rear suspension forward control arm" is far clearer than something like "rear front control arm" See the difference? Also many of these arms have their own special names, such as the "guide link" there. BTW, my guide links are still truckin' along at 192+k miles. Carry on.
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2001 X5 3.0i, 203k miles, AT, owned since 2014 |
#23
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I think adjustable rear suspension upper control arms are way more costly and less permanent than just getting proper rear suspension control arm bushings. In addition, using the upper control arm adjustments changes the offset more than making the proper corrections on the lower control arm for the rear suspension. This might pose problems for wheel offset and fender alignment. This was my ultimate deciding factor for not choosing to go with the rear suspension upper control arm correction solution. Using a poly bushing type in the rear suspension lower control arm is more of a permanent solution as opposed to the upper control arms in my opinion. As a side note, I've always been curious if these have been compatible with E53 rear suspension control arms: https://www.fcpeuro.com/products/bmw...ings-spc-72185 They are definitely more affordable if you're wanting the adjustability. And the E53 rear suspension is borrowed much of the other platforms that are listed in the compatibility tables for them. I dunno...but I wasn't willing to take the chance.
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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit 2007 BMW X3 3.0Si -- MT6 |
#24
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#25
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I will replace the rubber bushings with poly bushings. I will now have what amounts to a "lifetime" bushing. That bushing will be mounted in lifetime piece of metal, let's use the guide link. So the guide link and bushing are now lifetime, but the ball joint is not. I'm not aware of any ball joints being made that are "lifetime". If they do, I'd love to know about them. So, we have a lifetime bushing and lifetime link and ball joint that will wear out. My goal is to be able to keep a perfectly serviceable guide link and bushing and put a new ball joint into it instead of buy the alternative. The alternative being buying a new guide link assembly, pressing out the rubber bushing, installing my poly bushing from my old guide link which now has a failed ball joint and throwing away a perfectly serviceable guide link. If the ball joint can be replaced, then the only thing I will ever have to replace in the future is the ball joint. Is that making more sense? |
#26
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I can do some destuctive testing on my old arms when I replace them. I will be ordering a new pair from fcpeuro when/if the PUA ever comes though from my self unemployment. (all my customers are either IL or WI so works been a little light since Mar 17/25.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#27
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#28
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That's great! I'd love to know how it works!
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#29
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Maybe for pros it makes more sense though.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
#30
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There are lots of ball joint presses out there on ebay for not much money. Guessing there might be something that works for not too much money. Hell, one of the presses I already have may work.
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