Originally Posted by Ricky Bobby

Yes you are the expert Spencer since you just did your rear end suspension!

Thanks for the inputs, yes at my mileage I'm not feeling the looseness that loose tie rods would give, the X doesn't wander much or need constant correction either. I put on my 168s with Proxes STII's in July of last year and probably put about 2k on them max, shortly after I got my wheels I redid the front suspension, and since I needed to do my wheel bearing I didn't get aligned after that, and basically parked the car until I did my bearing so I wouldn't wear the still basically new tires unevenly.

And I know you have almost double the mileage I do, but you wouldn't believe it unless you drove this car a week ago and drove it last night with silence! The vibes and the wum-wum-wum sound as soon as I hit 40 mph and continued no matter how fast above I went, was ridiculous! Made the car undrivable.

I assume the right front bearing went bad before I bought the car, when the air struts were old (before I replaced with Arnotts) and the previous owner drove over a nasty pothole or something when the front was "slammed" and maybe gave excessive wear to that side and I really didn't notice when I first bought it but over the last year WOW did it get loud. Only reason I can tell for 100% certainty that 95% of my vibes/humming noises came from 1 wheel bearing, right front. And yes, still at 69k miles as of today!



I'm assuming some rear end suspension parts are showing signs of wear, bushings deteriorating, etc, as my whole front suspension parts replacement made the car completely different than it was when I bought in Dec. 2011. Worn subframe bushings transfer vibes at all?

EDIT: S, Sorry but after a highway drive this AM I will say that my vibrations also get transferred into the steering wheel, although not terrible, it is noticed. Since the vibes are noticeably reduced from replacing my right front wheel bearing, I am doing the left front for good measure, as I suspect the left one is not far behind, and these vibes I'm feeling from a bearing that has play in it will eventually turn into a roar like the right side had.

My buddy who balanced my wheels and is Master tech at Lexus said he would recheck the wheels for me if I wanted him too but they all checked out and balanced out fine. I will shake the tires tonight as I need to put the other 3 metal hub rings on my wheels anyway, just check for play in the rears, and look for play on left bearing in front.

He also told me vibes I'm feeling might be slight but if there is play in the existing original bearing in the front that its possible that would transfer the vibes in the drivetrain, and since the right front side is tight it is making the left side having slight looseness more apparent. He said bearings go over time so I might drive with slight vibrations now but in a few months it might end up making ridiculous noise like the right one did.


Thoughts?