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  #81  
Old 05-14-2020, 05:07 PM
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Wish I had read this a few weeks ago! Violent steering wheel shake 10degrees each way from centre!

Had the same issue but the horrible thumping was worse only down hill!

Went to the tyre bay and had all 4 wheels balanced and checked for run out and flat spots. All fine and each wheel was 20-50g out of balance...... made zero difference! But free and easy to do!

Went for a test drive. Horrible shake left to right from 57-67mph. Drive car in manual and drive at the same RPM in each gear. And it’s speed/attitude related not RPM thank god!

First changed the tension arms Bushing completely ripped . Changed them and 50% better but now shaking Is a solid thumping only at 60-65mph..... cost 75 for both sides (Febi-Bilsten)

then found the ball joints Were loose with the rubbers ripped. Wow they were fun! Another 20% better and now only thumping downhill Or accelerating uphill at 60-62mph!...... (50 for both again febi-bilsten

then the drop links were worn. Changed them made no difference to the thumping but a lot better body roll at the front..... 12 for both as all I could get quickly was cheap Chinese parts but they do the job so sod it!

Still some play this time from the inner track rod ends....... changed both inner and outer (mainly because they are dirt cheap and easy to do)...... massive difference to steering! Must have been loose the whole time I’ve owned it so really tightened up the handling! Even tho made no difference to thumping!.......... bargain at 14 for both outlets and 20 for both inners! Moog parts so low mid range but they’ll again do!

and finally the lateral control arms which were actually stiff with zero movement so I would never have thought they were shot...... but when they were off the centre metal collet was completely ripped out! And these the oil
Filled ones as the old ones almost looked deflated at the bush end?....40 each for Febi-Bilsten ones so not too bad ..... aaannnnd Fixed, 4 wheel laser alignment (actually wasn’t out Too much but worth doing)

Now beer and a Chinese takeaway!

All the parts I changed had BMW part numbers or stamps on so either original or changed before at a dealer (car has 120,000 miles on it)

Other than the ball joints this was an easy job with basic hand tools + pitman arm puller (the balljoints on the lateral arms blew out so hard then chipped my tarmac!)

Anyone else with this problem...... just bite the bullet and do all 4 arms and 2 ball joints at once and save yourself the delivery time! Obviously my other parts were just coincidence. All in with the alignment just shy of 300 in 2020. Well worth the money at the car is completely differnt to drive now.

Really shows why people call these Sporty 4X4s. I’d say it handles better than my Passat Alltrack now.
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  #82  
Old 05-14-2020, 05:10 PM
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Oh all those parts were changed as I found them worn!

Didn’t just shotgun parts at it!!

My point is that I would have been better changing the lot as a set from the beginning and then changing the track rods when I found them worn!

I’m a helicopter engineer by trade and this was like any vibration snag we have on the cabs at work..... fix one bit and it just chases it further back! Hope the OP traces his shake as well!

If all this hadentbhave worked my next stop would have been shock mounts, and then engine and transmission mounts

Notice now all this shake has hidden the warped disk I have on the drivers side! But I confirmed that with my DTI and I’ll get that changed when I do the brake fluid next month
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  #83  
Old 05-15-2020, 02:31 AM
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Funny mention of the shake hiding another fault.

I had a horrible right front bearing needing a second replacement. First lasted 150,000 miles second about 20,000. When I noticed first sign of the front wheel bearing going I of course assumed it was my other front bearing since I'd already replaced my right front (and all four in a wife's X5), but on closer exam determined that it was the same corner I'd already replaced.

So I already had the bearing to do the left: had to re do the right.

I was so so happy to eliminate the horrible UFO warble that was about 85 dB but on my first test drive imagine my surprise to find that the LEFT also needs to be replaced I just couldn't tell because the right was so so loud!
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  #84  
Old 05-15-2020, 09:35 AM
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Quote:
Originally Posted by andrewwynn View Post
Funny mention of the shake hiding another fault.

I had a horrible right front bearing needing a second replacement. First lasted 150,000 miles second about 20,000. When I noticed first sign of the front wheel bearing going I of course assumed it was my other front bearing since I'd already replaced my right front (and all four in a wife's X5), but on closer exam determined that it was the same corner I'd already replaced.

So I already had the bearing to do the left: had to re do the right.

I was so so happy to eliminate the horrible UFO warble that was about 85 dB but on my first test drive imagine my surprise to find that the LEFT also needs to be replaced I just couldn't tell because the right was so so loud!
I have a brand new FAG front wheel bearing still in the box. If you want it you can have it for $20.00.
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  #85  
Old 05-15-2020, 11:35 AM
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I will prob take you up on that when I come for the tension struts. Prob be a couple weeks I'll give you heads up.
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