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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 04-21-2013, 04:13 PM
claysones claysones is offline
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Steering pull problem.

I bought my first e30 about a month ago and love it. Im working through a few bugs to make it 100% perfect. The car was lowered before i bought it with Bilstein shocks and i believe H&R lowering springs, but i might not be correct on the spring brand. The car runs straight and true until you take a turn that requires more than one revolution of the steering wheel, then the car will pull that way until you make a turn in the opposite direction with the same steering rotation. Any ideas on what is causing this and what i can do to fix it?
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  #2  
Old 04-21-2013, 06:48 PM
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downhiller downhiller is offline
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bad tie rods, steering rack sticking due to bad/old fluid, bad ball joints, sticking calipers, could also be signs of a wheel bearing starting to go bad
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Old 04-21-2013, 07:11 PM
claysones claysones is offline
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I just bought the car and before i bought it I had the local BMW dealership and a certified shop do thorough inspections on the car and they did not say anything about that. Do you think it has anything to do with the shocks and springs?
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  #4  
Old 04-21-2013, 10:18 PM
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when, other than in a car park, are you turning the wheel more than one revolution? i rarely more than quarter turn the wheel
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  #5  
Old 04-22-2013, 04:50 PM
claysones claysones is offline
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Never, but if i pull out of a tight space and then get on the road the car will pull
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Old 04-22-2013, 07:19 PM
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its not the suspension, if it was it would be more consistent. you may be having a problem with your rack and pinion
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Old 04-22-2013, 07:24 PM
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Steering pull problem.

How much is the car lowered? Sticking rack sounds right. I havent heard of these cars are any cars really losing that much caster angle that the wheels wont recenter themselves.


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Old 04-22-2013, 07:29 PM
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Quote:
Originally Posted by First time View Post
How much is the car lowered? Sticking rack sounds right. I havent heard of these cars are any cars really losing that much caster angle that the wheels wont recenter themselves.


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really?




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Last edited by downhiller; 04-22-2013 at 07:32 PM.
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Old 04-22-2013, 10:07 PM
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Steering pull problem.

If you noticed I wrote caster not camber.


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  #10  
Old 04-23-2013, 07:34 AM
claysones claysones is offline
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its not lowered much. Maybe an inch to an inch. The tires fit pretty well in the wheel wells but they dont rub at any steering angle. Do you guys think it could just be power steering fluid?
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Old 04-23-2013, 10:28 AM
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Steering pull problem.

Worth a check. Maybe air in system?


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Old 04-23-2013, 04:58 PM
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Quote:
Originally Posted by First time View Post
If you noticed I wrote caster not camber.


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but excessive camber will throw off caster. excessive as in that vehicle.
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Old 04-24-2013, 07:22 AM
claysones claysones is offline
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The camber hasnt been touched i dont think
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  #14  
Old 04-24-2013, 04:39 PM
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Quote:
Originally Posted by claysones View Post
The camber hasnt been touched i dont think
if its been dropped the camber decreased. its how the suspension is designed. if you raise the car the camber increases if you lower the car it decreases.

and a lil thing i found on how camber and caster can effect each other

Quote:
Front end alignment

When a vehicle's front suspension is aligned, caster is adjusted to achieve the self-centering action of steering, which affects the vehicle's straight-line stability. Improper caster settings will cause the driver to move the steering wheel both into and out of each turn, making it difficult to maintain a straight line[vague].
[edit]Positive caster angle

The pivot points of the steering are angled such that a line drawn through them intersects the road surface slightly ahead of the contact point of the wheel. The purpose of this is to provide a degree of self-centering for the steering - the wheel casters around so as to trail behind the axis of steering. This makes a car easier to drive and improves its directional stability (reducing its tendency to wander). Excessive caster angle will make the steering heavier and less responsive, although, in racing, large caster angles are used to improve camber gain in cornering. Caster angles over 7 degrees with radial tires are common. Power steering is usually necessary to overcome the jacking effect from the high caster angle.
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  #15  
Old 04-25-2013, 12:02 AM
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Steering pull problem.

Quote:
Originally Posted by downhiller View Post
but excessive camber will throw off caster. excessive as in that vehicle.
Please do explain because I am trying to wrap my mind around this. I can understand excessive caster affecting camber gain but not the other way round.


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  #16  
Old 04-25-2013, 05:28 AM
claysones claysones is offline
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I just got the car aligned, so maybe they just did an awful job?
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  #17  
Old 04-25-2013, 07:19 AM
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Steering pull problem.

Hopefully not that bad of a job lol.


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  #18  
Old 04-25-2013, 06:50 PM
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Quote:
Originally Posted by First time View Post
Please do explain because I am trying to wrap my mind around this. I can understand excessive caster affecting camber gain but not the other way round.


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i think it deals more with dual wishbone suspension. i read something on it awhile back i can be getting the 2 mixed now that ive been refreshing my memory
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