Could it be the wheel bearing again?

[bkchang79]

Whenever I drive highway speed and then brake, I get this grinding noise from the drivers side front. But when I drive it after it's been sitting in a parking spot, these no griding noise. What's wierd is that I just replaced the wheel bearings last year and one side already worn out about 5 months ago so I got a used one. What's causing my wheel bearing to go out? What the heck is the noise I'm experiencing? Also I have ABS if there's anything to do with the noise. Could it be the 1.25 jks wheel spacers? Right now I have 4.5bs and I know several of you guys running the equalvilent or less.

Here are some answers and replays on JU
http://www.jeepsunlimited.com/forums/showthread.php?s=&threadid=268163

[Jes]

Have you pulled the wheel and checked your brakes?
You should post this on the OEM tech board.


Jes

[bkchang79]

I pulled the wheel, wiggled the wheel, and check the pads and rotors. Everything seemed fine to the eye. Could it be the rotor? How do you know a rotor is worm out? I got my slotted rotors last year and they seem fine now.

[jack SF]

are you sure that its not the tires. rotors dont uually make noise.

if it is the bearing than you have to make sure. i have never changed a bearing with out verifying 100% before. for that you have to have the car in the air and since its a 4x4 than run all 4wheels in the air about 30-40mph and listen with a stethescope. you can buy one at a tool store for about $20. its hard to tell if its the wheel bearings, maybe a diff bearing or even tires with out listening under the car .jack