hi to all the audi lovers... if you could help try to diagnose this problem that would be so awesome....
first question i have is..... I hear a slight humming from the rear end, maybe a ever so slight kind of grinding noise.. it goes away when i turn right. stays when i turn left. it isnt the brakes, i have applied pressure and the pattern of the sound doesnt differ... it doesnt sound to serious but i just want to know what it might be... just hearing this weird noise you know is not suppose to be there is annoying. i dont know as much as most guys that post here so any help is greaty appreciated...

also... i see small specs/dots of what might be rust forming? if it is how can i stop this from forming bigger... any tips?

thanks in advance

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AUDI A4 1998 2.8 AVANT QUATTRO

Right wheel bearing needs replacement.

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2001 A4 1.8T Q Casablanca White, Tip, ESP, Xenon and Premium

alright.. yeah that sounds like it might be the problem.. i thought it might be.. ill probably get some new wheel bearings and see what happens...
if anyone has any other suggestions let me know.

anybody know anything about this rust nonesense?
take it easy alll

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AUDI A4 1998 2.8 AVANT QUATTRO

jack each wheel of the ground an spin them and listen for bearing noise ( there should be no noise at all ) just simply a smooth rotation

you can just jack one wheel up, and spin 1 wheel on an all wheel drive car.... wont the other wheels spin aswell?

anybody have any suggestions on what that odd noise could be...?

thx peoples

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AUDI A4 1998 2.8 AVANT QUATTRO

no, the diffs on our cars are not limited slip, unfortunately. you can jack up any one wheel and spin it, provided the car isn't in gear. if you tried to spin both rears or both fronts, that's where you'd have a problem.

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-Chris

99.5 A4 1.8T | 6000K HIDs | Silverstar fogs | 35% tint | 18" RS4 reps

Wheel bearing most likely.

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2000 A4 1.8T Quattro tip
APR 93 chip
710N
ECS N75 Race Valve
Tip Chip
Borla Exhaust
Sports Suspension
Cracked windshield (again), 3rd timing belt

Does it make the noise on all types of road surfaces? Mine has a set of GoodYear Eagle RS-A that were on it when I bought it and on certain road surfaces like the brushed concrete they howl like all the bearings were gone. As soon as the road surface changes they run quiet again. Just thought I would throw this in the mix. If the tires are ruled out I would say wheel bearing also.

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1996 A4 2.8L 12V Quattro Auto

Wheel bearings also have a tendancy to go out in pairs. Myrear rightwent out and a week later the left went.

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-Craig
Deleware Valley Audi Group

i replaced one wheel bearing already and i dont raelly want to do another one.

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2002 A4(B6) 3.0L Light Silver
Mods: De-badged, Lip Spoiler De-chromed grill
Future 19's, 20%, Lowered