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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 09-21-2004, 06:36 AM   #1 (permalink)
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I have an e36 compact. I have the steering wobble when I apply the brakes slightly and at a certain speed - 40mph ish.

I believe this is due to some bushes being worn out and not as good as they were.

I understand that I can upgrade them to M3 items as they last longer?

The question is, which bushes are the problem so I can order up some replacements! I.E what are they called?

Thanks



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Old 09-21-2004, 08:12 AM   #2 (permalink)
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Most likely its your front control arm bushings.... I would look around... unless you have an upgraded suspension... I would just stick with the stock ones... as they wont put any un needed stress on other things due to a higher vib conduction to other parts.

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Old 09-21-2004, 10:09 AM   #3 (permalink)
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Well this was the other question. I will be fitted lowering springs more than likely as I want the lower looks but do not want to spoil the ride quality.

When I have upgraded shocks and springs on other cars it has spoiled the ride by making it too rigid. So am I right in thinking that the springs should do the trick for me this time?
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Old 09-21-2004, 07:33 PM   #4 (permalink)
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whatever bushings you replace, replace them with M3 bushings, they don't fail prematurely like the regular E36 ones fail. They are slightly stiffer, which is a good thing... to a point. I like the feel of them a lot.

Rear shock mounts, rear traling arm bushings, and front lower control arm bushings tend to die out first and you should replace them all every 80,000 miles or so. RTAB's are a total pain and can take upwards of 2-3 hours per side. I recomend you install shims while your at it to reduce the ammount of wiggle that is allowed in the RTA.

once again: replace all bushings with M3 stock. They are of higher quality so last longer and hold up to much more abuse.

As for the steering wheel shake, it could be a number of things. Most likely it's a warped rotor in the front that causes a shake. If it's really bad, you need to replace the rotors on both sides. (preferably all around) (in a TIGHT money pinch, just a replacement will work, not reccomended!) If it's just a little shakey during breaking, after a few months (3-6) it will probably go away due to the wear on the rotor. The 2nd most common thing to cause shakeyness are loose and worn out bushings as you assumed.


Rotor warp is usually caused by an uneaven cooling of the disc. This is most always caused by water splashing onto a portion of hot rotor, significantly cooling that portion quickly, causing it to shrink ever so slightly, subsequently causing it to be permanently bent since the whole rotor isn't uniformally changing temperature.
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Old 09-21-2004, 09:36 PM   #5 (permalink)
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Mine were just relaced with M3s today. Unfortunately other things stopped my from fully enjoying them. However, they are solid, last longer, and are offset, increasing your abilities in turns.
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Old 09-21-2004, 10:08 PM   #6 (permalink)
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I don't know if it's the bushing because I just had this problem and it turned out my front brake rotors were warped. Got them replaced and the shaking stopped.
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Old 09-21-2004, 10:12 PM   #7 (permalink)
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Mild shaking often exsaserbated ( i kno thats spelled wrong, but I rarely get a chance to use it) during braking is gernally bushings. Vibrating only durring braking is rotors or alignment issue.
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Old 09-23-2004, 07:51 AM   #8 (permalink)
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ghead na it sounds like bushes. But then it is ONLY during braking. It is at the 80k miles mark too!?

tricky!

ghead
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Old 09-23-2004, 09:52 AM   #9 (permalink)
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again..i have the same problem...my steering wheel gets pretty shakey when driving..actualy causes me to drift all over the lane im in (i have to hold on for dear life and pay close attention)..sometimes it goes away and drives fine..so i guess thats bushings..altho i have the shake problem when braking also,, i havent had the car long but the slotted rotors up front seem to be pretty clean i guess it could be warped rotors though,,im gonna go have it checked out this weekend so i will post up how that goes for me
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Old 09-23-2004, 12:12 PM   #10 (permalink)
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ok bud, let us know how it goes!
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Old 09-23-2004, 05:05 PM   #11 (permalink)
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You can visually inspect your bushings, Jack up the car (or just lay down on the ground really low and look around as best you can, use a mirror, or a digicam) and look at the bushings, if you see cracks, or torn pieces and things look a little loose (especially the lower control arm lollypop bushing, easy to find and look at) then you need new bushings. It may not CURE the problem, but it certainly would help your car's handling. Hopefully it's not rotors as they are at least 60 bucks each for a good set.

waxfondlr, Look at your bushings now, if your steering is unpredictable and really loose, you probably have something VERY wrong with your suspinsion. Either alignment is way off, or a bushing is so torn and loose, the parts the bushing is holding are sliding out and around inside of it.
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Old 09-23-2004, 10:29 PM   #12 (permalink)
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i actualy think i was still getting used to the car possibly,,it ran like a dream tonight..i came from a 2003 modified turbo gti that was chip tuned and other various goodies(about 220hp w/ all redone race suspension) so i think the size/weight of this car was just a bit overwhelming at first..it deff needs rotors and pads in back and a good look over tho for sure, i inspected the stock suspension and it looks ok,,i still need to dig thru this telephone book of reciepts and see what exactly was done
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