Shudder


#1

I have a 2004 Lexus RX 330. When I’m traveling at a velocity of over 60 miles and I try to brake, the car and driver’s wheel shudder slightly. This doesn’t happen when I’m traveling at velocities below 60. Should I be worried?


#2

You MAY have the beginnings of a tire separation.

While this fault is not always visible on the outside, (Unless there is a bulge or tread separation) a dismounted tire can be inspected on the inside for belt separation.

You can relocate your tires (one at a time) to see if there is a noticeable change.

Other suspects could be a worn cv-joints or perhaps a worn wheel bearing although these are noticeable at low speeds too.

No doubt someone will chime in with a more logical solution.


#3

Thanks. I’m due for a maintenance visit. I’ll ask them to check for this.


#4

I just thought of one other possibility, a faulty harmonic balancer (mounted on the crankshaft).


#5

May I suggest that one or more of the tie rod ends (particularly the inner ones) could be worn out?

My folks have a 2000 Intrepid that was acting very much like your Lexus…applying the brakes at highway speeds would bring about noticeable shuddering/shaking, and the steering wheel would wobble badly. Turned out both inner tie rod ends were worn out and loose as heck. New tie rod ends, problem solved.


#6

Any idea how much this would cost?


#7

Another possibility is a warped disc rotor.