50 Mph Shakes -what Causes It?(only Happens At 50)

[BILLKICKSASS]

my 535i shakes pretty bad (steering wheel shakes crazy) at around 50 mph. Once I get past 55 or so it goes away. I can even do 90-100 without a problem.

I just put in eibach springs and billstein struts that lowered the car a bit. Before I replaced the springs and struts there was a slight vibration at 50, but now it's a bit much. I got a 4 wheel alignment but it did not help.

I remember reading about a 50 mph shake or something similar in previous posts...

[Hoppy's535i]

thrust arm bushings

[Torque]

Originally posted by Hoppy's535i@Oct 19 2004, 05:20 PM
thrust arm bushings

[snapback]214249[/snapback]

i Si senor !

[85bmw535i]

I have the exact same problem with my car and its only at 50 mph. Are you sure its the thrust arm bushings?

[Torque]

Originally posted by 85bmw535i@Oct 19 2004, 07:17 PM
I have the exact same problem with my car and its only at 50 mph. Are you sure its the thrust arm bushings?

[snapback]214342[/snapback]

well it certainly solved my shaking problems used

[numberthree_]

THRUST ARM BUSHINGS or CONTROL ARMS.. I replaced both and its perfect now

[Hoppy's535i]

i have replaced both and still shake but its 99% gone. so the last bit ot the shake i believe is my tires out of ballence.

[llzoom_zoomll]

one thing, is if you have aftermarket wheels, then you might have to get hub rings (or hub centric rings). Discount tire sells them. i had this problem with my car, it shook at exactly 50MPH and stopped at around 55-60MPH. They will measure your hub size, and then your wheel hub area gap, and make a fitting accordingly. good luck

[91 535i]

hey,

i have a '91 535i with aftermarket rims and pirelli tires. i am always getting the shaking at 50mph and it does go away at 55 or so. i was wondering, does the shaking come back for any of you at speeds in escess of 120mph or some of the sharper turns.

[llzoom_zoomll]

yeah, i think over 120 ish, it happened to me too! get the hub rings, it should do the trick.

[BILLKICKSASS]

I brought the car to a tire shop and they rebalanced the wheels. The 50 mph shakes are gone now. They didn't even charge me. Good deal!

[bimmertech06]

hey bill. its a good thing you didnt jump into parts. the most important thing to remember, if you have a vibration that only occurs at a certain speed, such as you can drive into and out of the vibration, a general rule of thumb is to check the tire balance first.