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Old 11-06-2009, 04:59 PM   #1
Shuks
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Rear driver side wheel bolts keep loosening...

I installed the winters past weekend and now the bolts on the driver side(rear) keep coming loose. I drove about 15 kms and had to tighten them(all 5) 2 times. It's especially bad on turns...Mind you I ran the same setup last winter and it was fine. The rim couldn't just have bent itself lying in the basement? Only one?
Why not the others then?

Anyone?

Summers were 17s-winters are 15s. I doubt that has anything to do with it since I've only put 40kms on this week.
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Old 11-07-2009, 08:44 PM   #2
kenmar
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I've been having this problem for years when I was tightening to the 75 ft-lbs spec'd by the Bentley. Like you, the problem was always on the rear; never on the fronts. I think the problem is related to vibration caused by my LSD, which probably loosens up the lugs.

I talked to a a tire installer and he referred me to his chart which spec'd the E36 at 92 ft-lbs. So I tried that for a year, but wound up snapping 2 OEM wheel lock keys. What I do now is torque the wheel lock keys to 80 ft-lbs and all others to 92 ft-lbs. Seems to have worked fine for the past year that I've been trying it.
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Old 11-07-2009, 10:35 PM   #3
rdtx2005
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just tighten with a breaker bar until it's tight.. then go another 1/2 to 3/4 turn
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Old 11-08-2009, 11:11 AM   #4
magnus
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are your wheels oem? If not have you checked the center bore? You may need some of these rings on the pic.
In any case make sure the center bore is exactly the size of the wheels.


Also you could have wrong threated nuts.
I had titanium nuts on my nissan and they kept getting loose. Turned out it was the difference in expansion due to heat between the hub holes and the titanium nuts.
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Old 11-08-2009, 11:17 AM   #5
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One more thing....
it may be wise to replace the bolts as they can stretch and snap.
Check the pic below.
Considering the cost i would replace them to be sure.
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Lo there do I see my mother.
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Old 11-08-2009, 11:42 AM   #6
exbmwtech
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One more thing to check did you put any type of lube eg oil, grease, coppasilip etc on the threads if so you will never get proper torque and they will never stay tight.
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Old 11-10-2009, 09:06 AM   #7
Shuks
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Quote:
Originally Posted by kenmar View Post
I've been having this problem for years when I was tightening to the 75 ft-lbs spec'd by the Bentley. Like you, the problem was always on the rear; never on the fronts. I think the problem is related to vibration caused by my LSD, which probably loosens up the lugs.

I talked to a a tire installer and he referred me to his chart which spec'd the E36 at 92 ft-lbs. So I tried that for a year, but wound up snapping 2 OEM wheel lock keys. What I do now is torque the wheel lock keys to 80 ft-lbs and all others to 92 ft-lbs. Seems to have worked fine for the past year that I've been trying it.
tried this and it worked out fine. Thanks for the input folks.
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