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General E46 Forum
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Old 04-11-2014, 04:54 AM   #1
Btotheh33
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Join Date: May 2013
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Vibration driving me crazy.

So my 2001 330i has a vibration at highway speeds. I got tires road forced balanced . Car already has Meyle front lower Control arms. It is worse when its cold and gets less noticeable as car warms up. Any ideas?
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Old 04-11-2014, 06:50 AM   #2
jfoj
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Bent wheel(s) and/or stuck brake calipers would be my first guesses.

A road force balancer CANNOT make a bent wheel roll round and I have seen road force machines indicate that a bent wheel is "balanced" but the wheel be bent and the machine actually have a vibration while the tire is on the roller under load.

It takes just a few quick moments to identify and flag a bent wheel, can even be performed on the car without any special tools or equipment other than a keen eye.
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Last edited by jfoj; 04-11-2014 at 02:48 PM.
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Old 04-11-2014, 02:40 PM   #3
jcns
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no need for road forced balancing.
like jfoj said, check for bent wheels and stuck calipers
check for tire wear any strange patterns or bubbles (yes it happens)
how many miles on the suspension? tie rod ends could be worn out, ball joints in control arms, maybe a blown strut.
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Old 04-12-2014, 09:10 PM   #4
Btotheh33
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I switched to summer tires as vibration is def less than with snows. One of the winter wheels was def bent. It is still present when I first fire her up and hit the highway. After about 5 min it gets barely noticeable. With the summer tires it is in the steering wheel and it wasn't before. The car has about 140k and all the suspension components feel tight when I jack it up and shake down the front end. I also just finished $1000 in brakes with all BMW rotors, And rebuilt both rear calipers.
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Old 04-17-2014, 03:06 PM   #5
Btotheh33
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So it definitely vibrates only when it's cold and also pull so left when it's cold
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Old 04-17-2014, 03:36 PM   #6
jfoj
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Could be a bad/old tire. if the car has been sitting a long time on tires, they become "set" and will roll uneven until warmed up. If the tires are over 6 years old from the build date, they are pretty much dead and should be discarded even if they have a lot tread.

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Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 04-17-2014, 03:45 PM   #7
tachi1247
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Quote:
Originally Posted by jfoj View Post
Could be a bad/old tire. if the car has been sitting a long time on tires, they become "set" and will roll uneven until warmed up. If the tires are over 6 years old from the build date, they are pretty much dead and should be discarded even if they have a lot tread.

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6 years is definitely not a firm date. It varies significantly between manufacturers and some don't address the issue. Continental and Michelin say their tires can last up to 10 years depending on their condition.
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Old 04-18-2014, 07:14 AM   #8
Encryption76
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Mine does this exact same thing. Smooth as butter once the tires warm up a bit though.
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Old 04-18-2014, 08:49 AM   #9
lszlszx
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Rotate your wheels front to back, if it change you know it's the wheel.
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