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  #11  
Old 06-09-2019, 10:49 PM
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I have a slight wobble felt in the steering wheel at 97-105 kph and all new joints, arms, bushings... and my tire guys say I have a belt causing it (belt slightly misaligned that only shows at that speed then when faster centripetal force tightens/aligns the belt) not sure if true but the wobble is only felt by the driver and it is fine to almost 200kph

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  #12  
Old 06-10-2019, 01:18 AM
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Originally Posted by andrewwynn View Post
They are spun to determine where the misbalance is. Spinning exaggerates the amount of offbalance.

An out of balance wheel will pull harder from the center with more and more force as the wheel turns faster.

This will mean more force proportional to speed squared so it will always be worse when faster however as pointed out above often the shake can be absorbed by the suspension until it finds a resonance in the suspension components. That is why sometimes the shake can be much worse say from 55-60 mph then perfectly ok until 75-80.

If you have a shake that is very reliable at specific speeds nearly 100% chance that is an out of balance or out of round wheel.

Do your "light grip" test at different speeds and see if there are specific speeds you get a shake and if it disappears above and below. If so, tire balance problem.

You can often eliminate with a front to back rotate of the tires. If shake went away it's the tires.


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@Andewwynn,you first in detail testing tactic is above my head, but this one i understood more, right o, pretty confident I was getting the tremor vey slight at only 65 mph didn't try going over that speed as rarely will thats the speed limit out here, and i'll see if the fingers only driving is a way to feel it, we dont have 3 lane highways here, need to drive at least one hour to get to the only one, so have to find a road with no crown as you say. Have already had front thrust bushings done as well as items in yellow below, garage who tried alignement in the pass was the garage that advised the rose bushings and the links needed changing, after getting these changed got the alignment, also could well be a case on of the belts in a tire is odd as one poster said here....
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  #13  
Old 06-10-2019, 03:40 AM
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Ok the light grip test had wobble left to right at 65mph and over , so took it to one place for balancing of tires they said nope, take it to place alignment was done as shake is steering up and down is attributed to bad balancing, not it shaking lef to right....took it to alignment place and explained symptom slight wobble of steering wheel (but can't feel it) left to right on a straight line at 65mph and over initially he said balancing but when he looked at tires (and don't stone me for not mentioning this at start of post) he said you have different tires up fron't with differing treads and its like you trying to walk with different shoes on each foot....no idea how true this is as in the past had the wobble to a much greater extent even with the same set of tires ....?
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  #14  
Old 06-10-2019, 08:14 AM
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Steering shake at over 65mph

It sounds like rear control arms (front axle) to me: exact symptoms I'm used to when they first start to fail.

If I'm right the next symptom will be considerable shake when gentle braking from 50->40.


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  #15  
Old 06-10-2019, 12:31 PM
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Originally Posted by andrewwynn View Post
It sounds like rear control arms (front axle) to me: exact symptoms I'm used to when they first start to fail.

If I'm right the next symptom will be considerable shake when gentle braking from 50->40.


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Ok thanks will keep an eye for that too...for now just gonna lump it and see how quick i eat through the tires
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Old 06-10-2019, 01:10 PM
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Sometimes you go and find the problem. Sometimes you sit back and let the problem find you. This might be something in the latter category.

But hey, something completely different that should be easy to check ...

Sometimes the steering wheel gets a little loose on these cars due to a problem at the double u-joint in the steering column.

With the car parked and off, can you feel any loose wiggle in the steering wheel?

When I first got my '01 3.0i, it had about 2 cm of left-right wiggle like that. For me, it turned out to be a simple matter of loosening, recentering, and torquing/threadlocking the set screws that hold the double-u-joint assembly to the column. That assembly is visible with not too much effort on the 3.0i, looking down in the engine bay. Once tightened properly, it should be perfectly tight, with no slop.
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  #17  
Old 06-10-2019, 01:25 PM
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I have had internal belt failure. Tire can balance fine but will shake at speed. It feels different more of a pronounced pulse because it's a wheel not round problem not a wheel heavier in one place problem. Imagine you had a lump of clay stuck on the tire so you are driving over a bump every revolution.

The mix match tires hints at tires not top quality and better odds the problem is internal. If they are more or less worn then they are going different speeds and can also cause a shimmy.
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  #18  
Old 06-10-2019, 02:22 PM
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Originally Posted by andrewwynn View Post
I have had internal belt failure. Tire can balance fine but will shake at speed. It feels different more of a pronounced pulse because it's a wheel not round problem not a wheel heavier in one place problem. Imagine you had a lump of clay stuck on the tire so you are driving over a bump every revolution.

The mix match tires hints at tires not top quality and better odds the problem is internal. If they are more or less worn then they are going different speeds and can also cause a shimmy.

Apologies to all IF this is the reason (odd tires), bad thing is all the tire balancing guys I went to refuse to balance! stating the fact that I have mismatched tires and no point, as to the exent of wear on each i would say they are pretty much the same but impossible to say for sure exactly if there is a rolling circumference difference....thanks though for all your time on this...can we say for sure that the steering wobble is actually the wheels shifting slightly left to right? guess I will find out if my tires are toast sooner rather than later....
from day 1 i had too much rear camber, corrected that believe or not by shifting to 17" alloys 235.65 but a year or so later and after passing over an item on the highway my fronts started to wear, had the front thrust bushings done and also one wishbone, year later all tires I had on x5 (all the same type) were worn mostly on outer left side...sooo then had the rear rose busings done and the other link as shown in the pic...an alignment so now a wait and see
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  #19  
Old 06-10-2019, 04:47 PM
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Yeah, all bets are off with mismatched tyres..
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  #20  
Old 06-11-2019, 12:23 AM
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Quote:
Originally Posted by oldskewel View Post
Sometimes you go and find the problem. Sometimes you sit back and let the problem find you. This might be something in the latter category.

But hey, something completely different that should be easy to check ...

Sometimes the steering wheel gets a little loose on these cars due to a problem at the double u-joint in the steering column.

With the car parked and off, can you feel any loose wiggle in the steering wheel?

When I first got my '01 3.0i, it had about 2 cm of left-right wiggle like that. For me, it turned out to be a simple matter of loosening, recentering, and torquing/threadlocking the set screws that hold the double-u-joint assembly to the column. That assembly is visible with not too much effort on the 3.0i, looking down in the engine bay. Once tightened properly, it should be perfectly tight, with no slop.

Believe it or not have a slight slack in the steering wheel when car is off I believe (for years), garage tried to tighten in (got to it from below) but still the same
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