Wheel Bearings Replaced But Still Sound!

[mamps52]

Hi there new lexus is200 se owner here. Great site.

I recently bought an is200 se with 50k on the clock. I have a strange sound coming from the front drivers side. It is a humming revolving 'whoop whoop whoop' sound when going between 25-30mph.

It sounds just like what people describe as wheel bearing failure sound. However i have had both wheel bearings replaced,along with both upper and lower ball joints on both sides of the car.Also i have had the drivers side caliper and sliding pins replaced. Also i have tried to bend the backing plate so there should now be a better clearance between this and the rotor So what in the hell could be the problem?!!

Also to note...at full lock to the right,there is a grinding noise.could this be related?

i have noticed that the rotor on this side has rusty groove marks,but could this really cause this sound even when not applying brakes?

Im sorry for the essay,but im at a complete loss as to why i still have this sound considering ive replaced the bearings,ball joints,caliper and sliding pins on this side of the car!!

Thanks for any insight

[mamps52]

Forgot to mention the car is an auto

[Guest]

what shape are your tyres in?

[mamps52]

Sorry i dont understand what u mean?...

[Guest]

Sorry i dont understand what u mean?...

The inner edge of my tyres became quite worn. The rest of the tyre looked fine over 4mm. I fount this was causing my whomp whomp whomp sound after I replaced them.

[mamps52]

Oh ok. Well the osf tyre is outer 3mm middle 4mm inner 3mm.

But what concerns me is the fact that i get a grinding sound aswell front osf when at full lock and slow,could this be linked to the whoop whoop whoop sound front that side aswell?

I had the reputable JEM ltd of colindale have a look at the car after a service. They said my ball joi ts and wheel bearings had gone. But i replaced all of them anf i still get this sound

[mamps52]

The sound sometimes is more pronounced, sometimes less so.it comes once the car has been driven for a few mintues

[mamps52]

Someone point me in the right direction please!

[GoonerPatrol]

Hi mate, I'm having the same problem and it's starting to get really annoying.

It's got a point where I'm scared to drive with my window down and I'm hopping people can't hear it as I drive past lol like you said only happens when I drive over 30mph.

Have you heard anything about solving it?

[Guest]

Have you had you calibers checked for seizing? My slide pins had seized before causing the pad to rub the disc slightly on each rotation where there was a minute variation in the disc. This cause a build up of material on the disc which caused a soft grinding noise on on part of the disc as it goes round. Maybe you could get you rotors checked because there is a greater chance of material deposition on your rotors as you are an auto. Most auto drivers pull up at lights and hold the brakes on which causes pad material to be burned onto the disc. This the cause the brakes to feel warped.

http://www.stoptech.com/technical-support/technical-white-papers/-warped-brake-disc-and-other-myths

See this link for a better explanation.

[mamps52]

Thanks mate.yeah i think it might be the front osf disc. It has a a 2mm ridge which goes all around it. Also when braking to a near stop slowly i get a click click sound.

As far as my calipers are concerned ive had them replaced along with new slider pins. So i guess it must be my brake disc that is messed up causing this sound. What u reckon?

[Guest]

Definitely the disc if there is a 2m ridge. Well.... hopefully I don't know what would be clicking though. The pad wear indicator usually squeals.

[mamps52]

Kool thanks for your help.i will change the discs and report back

[mamps52]

To report back,changed front brake discs and the noise has almost gone. Company ng to the conclusion that either the alloy slightly buckled or that the tyre is damaged. However the noise is barely noticeable. Getting alloys refurbed,will find out then if its buckled or not.

[petayV8]

Also check your handbrake drums inside for broken parts inside