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#52
06-07-2016, 01:56 PM
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Let us know the results.....
__________________
 2005 X5 4.8IS The Blue ones are always FASTER.... Current Garage: 2005 X5 4.8is 2002 M5 TiSilver 2003 525iT 1998 528i Former Garage Stable Highlights 2004 325XiT Sport 1973 De Tomaso Pantera, L Model 1970 Dodge Challenger T/A 4 sp Alpine White 1970 Dodge Challenger T/A 4 sp GoManGo Green 1971 Dart Sport, “Dart Light” package 1969 Road Runner 383 1968 Ply Barracuda 340S FB Sea-foam Green 
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#53
06-13-2016, 07:27 AM
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Thanks guys, right. Update... Not a huge amount of room on the other side of that metal plate and its heavy! I took all the bolts completely out just to have a good look underneath before I then tightened everything back up. I used the old bolts, I have the TTT bolts on order from BMW and top nuts... soon as they come in I will fit them. So its stopped the knocking. I have a torque wrench. torqued them to the correct setting then gave it another quarter turn. Then another quarter turn to be safe
 . I did it at the weekend and have only covered about 30 miles since, but it has been totally silent. Only time will tell if it comes back again. WARNING... the metal plate is heavy.... I put a bottle jack and a piece of 4x2 and then lowered it off. I would estimate 5kgs but I am sure someone on here knows the exact weight. I would say as I was on my back under the car with only one hand free, if it came loose when I was undoing the bolts it would hurt a lot. So careful.
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#54
06-13-2016, 07:44 AM
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Glad you tightened them up. Replacing those bolts is a question of debate here. The fact that no BMW dealer stocks them, from the ~6 I've contacted shows me the service departments aren't replacing them every time they work on an X. If they did replace them every time, they would keep a bunch in stock. Price is crazy expensive from the dealer now. I suspect properly tightening the ones you have is all you need.
__________________
David.X5 2001 X5 4.4i Sport SOLD! at 160k miles
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#55
06-28-2016, 12:54 PM
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Have the same clunking noise on my '06 4.8is when I go over uneven surfaces, straight ahead or turning. I've had the self leveling suspension serviced multiple times so I'm guessing the stiffener plate may not have been bolted/torqued to spec. I really hope this is the answer as the clunking is driving me nuts.
Does anyone have pics of the plate and bolts they can share? Would be great to know what I'm looking for so I can give it a shot before resorting to mechanic. Thanks in advance. EDIT - is this it? Picture of page 310-2 from Bentley manual Last edited by cmbenedict; 06-28-2016 at 01:10 PM. Reason: Additional info
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#56
06-28-2016, 02:22 PM
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That is IT!
Bolts, nuts and washers are approx $27 total from Dealer sources. Some on the forum have used grade 8 bolts, nuts and washers with success. Biggest issues are around correct torque (clamping power) at the mounting points to stop any shifting. The OE bolts as mentioned are torque to spec, then 90 degrees, and use once. Many posters and dealer techs do not do so without any posted consequences. If you too do so you are on your own......
__________________
2005 X5 4.8IS The Blue ones are always FASTER.... Current Garage: 2005 X5 4.8is 2002 M5 TiSilver 2003 525iT 1998 528i Former Garage Stable Highlights 2004 325XiT Sport 1973 De Tomaso Pantera, L Model 1970 Dodge Challenger T/A 4 sp Alpine White 1970 Dodge Challenger T/A 4 sp GoManGo Green 1971 Dart Sport, “Dart Light” package 1969 Road Runner 383 1968 Ply Barracuda 340S FB Sea-foam Green
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#57
06-28-2016, 05:41 PM
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Thanks StephenVA! I'll take a look over the next couple days to see if that's the problem (fingers crossed). Will post up what I find.
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#58
06-28-2016, 06:25 PM
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Quote:
These bolts work fine on reuse its not mentioned that they need to be replaced. Tighten them up and just move on.
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#59
06-28-2016, 11:22 PM
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Quote:
__________________
2006 BMW X5 4.8is 2001 BMW 530i 2003 BMW 325ci
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#60
06-29-2016, 12:23 AM
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As a rule of thumb, any bolt that is spec'ed to tightened to a torque value, then an angle (e.g. 56Nm + 90 Deg.) is a single-use bolt - the bolt stretch is part of the calculated tension.
Another rule of thumb is you can often get away with not using new bolts in such applications. 
__________________
Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) 
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