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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 04-04-2013, 09:17 AM
Dandy dog Dandy dog is offline
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Location: Denver
 
Join Date: Nov 2012
Posts: 18
Mein Auto: 88 325ic
Steering Vibration

My '88 325ic has a vibration at about 60 mph that seems to come from the right front wheel. It happens only in sweeping left turns, and I can stop the shimmy by either lifting or accelerating.
I've re-balanced and rotated the tires several times, and I'm about to replace the (driver's side) link to the anti-sway bar, where there's a semi-worn bushing.
I can't see anything else wrong with the suspension (I replaced both control arms within the past 5 years). Anybody got any suggestions or similar problems?
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  #2  
Old 04-04-2013, 11:19 AM
Scartissue27 Scartissue27 is offline
Driving is everything
Location: Houston
 
Join Date: May 2011
Posts: 25
Mein Auto: 540i//E30//E36
I actually did a front suspension overhaul which included bilstein struts and eibach springs along with control arms, tie rods, and yokohama tires and there is still a slight shimmy in the front end at about 70mph. It cost me a lot and I figured it would have eliminated the problem. I will say this... it did improve it, quite a bit.

oh, and did I mention I got an alignment as well lol.

Let me know if you figure it out .
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  #3  
Old 04-04-2013, 06:36 PM
Dandy dog Dandy dog is offline
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Location: Denver
 
Join Date: Nov 2012
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Mein Auto: 88 325ic
Nice car, Scartissue.
I can't believe you didn't eliminate the shimmy with such a thorough overhaul. You must have gone through the roof the first time you hit 70 after the rebuild.
Keep watching this thread - somebody's bound to have solved our problem
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Old 04-04-2013, 06:44 PM
Scartissue27 Scartissue27 is offline
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Location: Houston
 
Join Date: May 2011
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Mein Auto: 540i//E30//E36
Your absolutely right but it got a lot better so I was like oh well I was so impressed with the handling it compensated LOL.
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  #5  
Old 04-04-2013, 07:34 PM
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downhiller downhiller is offline
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Location: des moines
 
Join Date: Oct 2007
Posts: 7,294
Mein Auto: 2012 hypermotard 796
rotors can be warped, wheel bearing can be starting to get play in it besides that ball joint(s).

i would push more towards the bearing is starting to shank itself out due to it happens in a left turn and its the right side. unless its the control arm bushing. sway bar bushing shouldnt cause a shimmy but im goin off college books there
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Old 04-06-2013, 09:06 PM
Dandy dog Dandy dog is offline
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Location: Denver
 
Join Date: Nov 2012
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Mein Auto: 88 325ic
I may have found the problem . . .

. . . One of the wheels seems to be causing the vibration.
I went over the suspension carefully and couldn't see anything that looked wrong or worn (the Bilsteins are only a couple of years old), so I dropped back into trial-and-error mode: I took each wheel off in turn and replaced it with a recently-balanced winter tire, then test-drove the car. On the third try (left rear), the vibration disappeared.
I'll take a longer test drive tomorrow, and if the problem stays gone, I'll take the wheel in to a Discount Tire and find out what's wrong with it.
More later.
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  #7  
Old 04-13-2013, 12:12 PM
Dandy dog Dandy dog is offline
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Location: Denver
 
Join Date: Nov 2012
Posts: 18
Mein Auto: 88 325ic
Something's still wrong, here . . .

. . . Discount Tire says the wheel is bent and needs to be replaced (I've got plenty of spares.)
But the shimmy at and around 60 - 65 comes back on longer trips, then disappears when I'm only running out on a 5-minute errand (warm tires? [It's still around 30 up here, most of the time.] Or bushings becoming more flexible through use?)

I'll replace the bent wheel with a good one with summer rubber to match the other 3 corners, but I don't think that's gonna do it, and I'm at a loss about what to try next. Maybe have the front end alligned? I haven't done that in, like, forever: is that procedure sophisticated enough that I need to take the car to BMW?
Suggestions, comments and constructive criticism will be welcome.
Neil
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  #8  
Old 04-13-2013, 06:37 PM
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downhiller downhiller is offline
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Location: des moines
 
Join Date: Oct 2007
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Mein Auto: 2012 hypermotard 796
could have a sticking caliber thats causing the problem.
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  #9  
Old 06-18-2013, 05:10 PM
Dandy dog Dandy dog is offline
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Location: Denver
 
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Mein Auto: 88 325ic
Steering vibration solved

After dealing with a batch of more serious problems, including a faulty power-steering rack (which improved the situation but didn't entirely eliminate the vibration), I replaced the little 6" link to the anti-sway bar on the passenger side (which had no apparent wear, even when removed): Bingo. The vibration went away completely, and I'm a very happy camper.
(Note to Scartissue: If you've still got some trace of the problem, you might want to give this a try - it's a cheap fix, both in time and money.)
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