I went ahead and ^started^ celaning out the wheels. Just thought I'd share my expeince, and what widsom I now have
Anyways, rather than going out and buying a torque wrench and messing with getting them off by hand, I decided to run into the shop at work (I work at a nursery, so it's DIRTY. i needed to give it another wash anyways =] ). A nice bonus was that I had a lift to use, and air tools!!
Here's the lift. I took forever lining up the lift arms to the right place. I was SO worried about messing something up. Luckily everything turned out ok, and now I know how to do it next time.
Once I got the car up in the air. I went ahead with an impact wrench. (for those of you counting the S4 has 17mm lugnuts). They came right off, and I don't think I scuffed up the wheel too much doing this. Once the lugnuts where out, I ran into my first problem. The wheel wouldn't come off!! I could see that the center cap on the hub had rusted to the wheel so I decided to give it a little kick. And here's my first major thing I learned.
MAKE sure that the wheel isn't going to just fall off! mine did and now I have a nice ding on the wheel for my carelessness. Lesson learned.
This turned out to not big a major deal, as I found that the wheels aren't in perfect condition. I can't tell if some of the paint is peeling off, or if it's some kind of coating (My guess is a bit of both) When I scrape some part off with my finger nails it comes off silver, and leaves a dull finish underneath. Yet other spots still come off silver, but seem to leave a shinier surface. I thinking that I'll just ask the guys at the dealership about it next time I go in.
Anyways, on to my process. I took some A2Z (yeah I've heard about how the stuff can be dangerous to wheels. But I only plan on using it this one time, or if the wheels evern happen to get ^really^ dirty again). I then went to work with a terry cloth to scrub the wheels like crazy. This got about 98% of the junk off of there. They aren't perfectly clean now, but since the paint on the wheels isn't looking so good anyways, I figured it was good enough and went on to the other rear wheel while this on dried.
Once I had the other wheel done up the same. I went back to the other wheel, dried it off the rest of the way with another terry towel, then clayed it up to get rid of more junk on the wheel. I then topped this off with some #20 that I found laying around. I'm thinking that should give them a nice layer of protection. They sure are nice and smooth =]
Once I had the wheels all cleaned up I put the wheels back on using the guide tool that Audi gives you so that the wheels line up easily (thanks for the heads-up on this one Accumulator, this helped out a ton) I got the lugnuts back on with the tool in the car kit so so that they were tight by hand. I then lowered the car back down, got out the torque wrench to finish the job off. I set the wrench somewhere between 85-90 ft-lbs. I couldn't find the torque specs in the owner's manual, and I didn't have i-net access out there too look it up. Then I drove home and ate some food. Man was I hungry. I guess I worked harder than I thought.
Here's a picture of the front wheel that I didn't clean yet
And here is one of the rear's all cleaned up.
It's kinda hard to see the difference here since the wheels are back on the car with the shadows and all. But needless to say I'm very happy with the results. They're not PERFECT, but I'll take it =]
Unfotuantly I ran out of time before I had to go to dinner, so only the back wheels got cleaned. I'll just have to find some more time when the shop is open so that the fronts can get cleaned up.
I'm already thinking about my next project after I get the wheels cleaned, painting the calipers. Right now I'm thinking that I'll go with read with some grey or black audi ring stickers.
Anyways thanks for all of the advice.