I am trying to figure out what a roaring sound is. It sounds like i am running mud terrains on my b5.5 A4. Noise goes up with speed and stops when going left. Rotated tires which i thought was the problem since i have cheap federals but still the same. Is this the wheel bearing?

 

Sounds like it to me. Easy to do yourself

 

Yup wheel bearing on left side is shot.

 

It's hard to figure out what side it is i am leaning toward the passenger side bearing. It roars when i turn right or go straight but stops around left turns.

 

It's the left side.

 

You should replace both though, last time I replaced 1 bearing the other one started making noise a week after.

 

i dont know what side, but id agree at least one of the bearings are bad. i had a similar problem not long ago. it went bad at the same time i got new tires, so i blamed the tires at first. i waited for the tires to wear for a about a week then realized something else had to be wrong.

 

New to audi's too. My rear wheel bearing is loose and Im wondering if they like every other bearing where I can just tighten it up or is it a press in bearing

 

Ok thanks ordered one from Mjmautohaus hopefully i get it in soon and get this changed! I'll try the left side.

 

You can tighten up the bearing but don't do it yourself because I replaced a bearing that was installed 1 month before because the mechanic didn't do it job properly.