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#11
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Thanks for the tip.
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2009 xDrive35D Comfort seats, Tech, Premium, Cold Weather, Sport w/ Adaptive Drive, Extended Nappa Leather Deleted & Stg 2+ Tune for over 115k miles 227k on the clock Being replaced by a 2016 X5d |
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#12
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I'm not complaining about my ride quality. It is fine. But to answer your questions, I'm on 20'' Y-spoke 214s with Bridgestone runflats. I don't have any problems with them in general and they certainly are not my problem at this time. I will likely change to non-runflats next time I need tires, but why should I throwing away a perfectly find set of tires for a problem not related to them. I run 40 psi on rears and 38 psi up front. Runflats eat away from the inside as if you had extra camber with factory inflation recommendation (many threads on this). I saw many foam-like shavings over my strut towers, indicative of various foam bump stops disintegrating over time. I will snap a few pictures for reference and documentation. Turns out BMW calls 2 of these strut bearing flanges, and the actual bump stop "additional shock absorber" lol. I will swap them out and we'll go from there. We, however, need a discussion about what to do when the problem turns out to be the struts themselves. It'd be nice to have options since almost 2 grand for two struts does not sound too appealing. e53 guys appear to have options but not us. I hope Arnott or some other company is looking into rebuilding ours.
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Black Sapphire MetallicNevada BrownDark Bamboo e70 X5 xDrive4.8 Alpine WhiteCoral RedAluminum f30 328i Sportline/6MT Imola RedBlackBlack Aluminum e46 330i ZHP/6MT |
#13
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Yeah, the bump stops are actually an additional shock absorber on BMWs lol. I completely replaced the suspension myself on my 335d and a lot of it on the X5. BMW designs the "bump stops" to actually be engaged when the suspension is farily compressed. Its not so much a stop as an additional progressive increase in damping on compression. That way you won't have a whack when you bottom the suspension. The stops are cheap, but labor intensive on the front to replace. On the rear, the X5 is easy as pie to replace yourself. Unfortunately its pretty hard to tell if a strut is toast while on the car, unless its really bad. The usual 1st sign is if you hit dips on the freeway and you have multiple bounces. When you take them off the car its usually readily apparent. If the strut/shock has little/no resistance and isn't smooth in action while compressing it, and doesn't immediately return to the extended position when you take the pressure off. On my e90 I swapped over to Koni FSD shock/struts and I'm very happy with them (better than stock and less expensive). On the X5 I never attempted to swap as my old 2008 4.8i had adapative drive with electronic damper control. Those shocks/struts were nearly 1k each. No aftermarket replacement, but you could disable edc and go with conventional struts/shocks. Last edited by Thecastle; 03-29-2017 at 10:41 AM. |
#14
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I agree with everything else, but I don't think most of my suspension components needs replacing at this time. My only problem seems to be with this knocking noise over sudden dips, otherwise it can take bumps pretty well and the ride is pretty firm. Both front and rear ends seem pretty planted on good roads. You're welcome to join/help me while I'm rebuilding my struts. I love me some good company while working on my cars. Oh, and beers on me!
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Black Sapphire MetallicNevada BrownDark Bamboo e70 X5 xDrive4.8 Alpine WhiteCoral RedAluminum f30 328i Sportline/6MT Imola RedBlackBlack Aluminum e46 330i ZHP/6MT |
#15
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The difference is, the rubber bushings are still going to wear out on a chevy cavalier. It will take a little longer, but it happens so gradually you get accustom to it. With the various hydraulic damped, rubber bushings and overall complexity of the suspension on the 5,7,x5, etc means that the failures are more apparent. And the other difference is that BMW actually recommends them as maintenance items whereas other brands seem to take a "run them till its unsafe" approach to these items. I can tell you, on my offroad beater Isuzu Rodeo, the upper control arm bushings are so far gone the arms are hitting the frame. It still drives as well as I can expect it to. It just makes some funny noises. Obviously I plan to replace them.
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2009 xDrive35D Comfort seats, Tech, Premium, Cold Weather, Sport w/ Adaptive Drive, Extended Nappa Leather Deleted & Stg 2+ Tune for over 115k miles 227k on the clock Being replaced by a 2016 X5d |
#16
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Maybe we'll meet up some time. P.S. I live in League City (galveston county). The roads here while very congested and traffic light infested generally have good pavement. |
#17
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2009 xDrive35D Comfort seats, Tech, Premium, Cold Weather, Sport w/ Adaptive Drive, Extended Nappa Leather Deleted & Stg 2+ Tune for over 115k miles 227k on the clock Being replaced by a 2016 X5d |
#18
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I invested in one of these kits today. I will also be installing KW V2 coilovers on the F30 328i, so they should come in handy. I didn't want to trust the Autozone compressors this time. I haven't had the best experience with them. BMW documentation also suggests using something similar.
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Black Sapphire MetallicNevada BrownDark Bamboo e70 X5 xDrive4.8 Alpine WhiteCoral RedAluminum f30 328i Sportline/6MT Imola RedBlackBlack Aluminum e46 330i ZHP/6MT |
#19
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Is my suspension going bad or?
Pulled out the driver's side strut and disassembled it today. I think diagnosis was on point. One of the rubber bushings/bump stops that was supposed to be there was non-existent!! The others, well, I'll let this picture speak for itself. Btw, the biggest one on the far left came out in two pieces.
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Black Sapphire MetallicNevada BrownDark Bamboo e70 X5 xDrive4.8 Alpine WhiteCoral RedAluminum f30 328i Sportline/6MT Imola RedBlackBlack Aluminum e46 330i ZHP/6MT |
#20
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I haven't disassembled my struts or really take a look on the internals of them but I was thinking if they were bad going to coilovers. Is cheaper than OEM struts, you can even buy a EDC delete module to not have an error message. http://www.bimmerworld.com/KW-Coilov...3-V3-X6_2.html Sent from my Pixel using Tapatalk |
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