Many of the RS4 test drives and reviews have noted that at high speed, the RS4 rear end feels a bit loose. Mind you, these aren't speeds we see every day, but for those times when one is so inclined to push the car, you want maximum control.
I remember back also when the TT first came out, it to suffered from a little high speed rear end "looseness" that was remedied by a properly designed rear spoiler.
Would such a device work on the RS4?
08-07-2007, 05:27 AM
The former is easy and cheap to produce, where as the diffuser will be a few grand.
08-07-2007, 06:12 AM
08-07-2007, 06:17 AM
Think E46 M3, 997 GT3/RS. Small but induces a good amount of drag.
<center><img src="http://pictureposter.audiworld.com/561/015__scaled_600.jpg"></center><p>While the wing on the Champion car is probably quite a functional piece, would you want to be seen driving around in public with that thing on your car? Didn't think so. Neither would I.
The piece here is subtle enough for my tastes. The question is if it would in fact do anything, or is it just a useless cosmetic piece. Also, if it could be adapted to the RS4 trunk.
08-07-2007, 01:29 PM
that problem on my S4 and I picked up on that problem right away when i got it. IT was much more of a problem than on my A4 for some reason. It appears suspension related rather than aerodynamics as the A4 and S4 and pretty much RS4 for that matter have very similar aerodynamics. Additionally it is not as though the rear gets completely light but rather there is an odd gyration before it settles back down. I suspect if anything it could use front air dams to help eliminate understeer.
I'd like to find somewhat of a compromise between something that actually produces a little downforce but doesn't look like a full blown race wing.
I would really rather do nothing, but I do take my car up in speed from time to time, so something that fits well with the lines of the car and isn't obnoxious would be acceptable.
Of course, there are people who just plain dislike rear wings/spoliers altogether. I am not one of them, but it has to look just right. Again, that will be a matter of opinion.
Here is a pic of my old B5 S4. The rear wing is a Reiger Type M. Worked for me. Sorry for the crappy quality. Pic is 7 years old and digital cameras have come a long way since then.
08-07-2007, 06:53 PM
08-07-2007, 06:54 PM
08-07-2007, 07:12 PM
08-07-2007, 07:29 PM
Fairly simple piece to design, simulate and produce.
We did these parts to test the marketability of quality Audi CF parts. The weave is perfect and we warranty for 3 years. It just all comes down to how much anyone is willing to spend.
Although the requests for these products was there, all the feedback is how they are overly expensive ($575 - $650 for the items above). Unfortunately the price for raw materials has increased so much due to the "war efforts", leaving us with our hands tied. The last thing I want to do again is make several grand in parts that consumers ask for but are unwilling to pay for.
08-07-2007, 07:59 PM
08-07-2007, 08:04 PM
Just wanted to show the type of product we have and give a true realization fo the pricing.
I'm having some RS4 parts done in the next two weeks (Mirror Caps, front chin spoiler and the stock rear valence) to see how it comes out and if the demand from you all is really there.
08-08-2007, 03:35 AM
Does that help any?
Any plans to make them Liam?
08-08-2007, 06:24 AM
08-08-2007, 07:11 AM
08-08-2007, 08:25 AM
We purchased an existing CF Roof Spoiler from another company for comparisons. Quality sucks, it doesn't realy flow with the lines of the car and as far as I can tell has zero functional effect. It's profile is a bit too high and most likely is decreasing the drag from the trunk spoiler.