My Experience With 2008 Touareg V6 & 16' Bambi Sport
I was grateful for all the info posted on this and other threads about the Touareg's warning statement in the owners manual about never using a WD/LE hitch, the anti-sway bars issue, length of ball mount, brake controler problems, etc. I will relate a quick version of what we just went through, mainly because we couldn't really decide what advice to take as given on different threads (although I'm convinced it was all well-intended and based upon personal experience). We welcomed it all, then finally had to dive in on our own and find out for ourselves!
OK, we bought a 2008 Touareg V6 without air suspension. We paid the local VW dealer here in Seattle to install a VW trailer hitch and a Tekonsha Prodigy 2 Brake Controller. They didn't have a ball mount to sell us (more in a bit). The output for the hookup with the trailer didn't work the first time, and they had to reprogram the Touareg's computer to recognize it. Then the brake controller drove them crazy, and they had a lot of problems trying to get it to work. They called VW tech service and they were unable to help, so the mechanics went on the Internet to find some solutions. I will say that I called VW tech support myself when I had a question about the statement in the owners manual about never using a WD/LE hitch. All they could do is read me the portion in the manual. They must have thought I was illiterate or something, but the point is they were useless.
The good news is that the VW mechanics was indeed able to get everything working properly! If anyone has a similar issue with their dealer, their name is Carter VW in Seattle and I suspect they would be willing to help out with where they found the information they needed to make things work, or they might be able to remember what they did.
Then we read the little sticker on the VW hitch that says :maximum distance from middle of pin hole to middle of ball not to exceed 6.15 inches" or similar wording. As many have already stated, they don't come that short! We looked all over, and finally found the shortest mount we could and had a tow hitch place drill another hole to get the distance as close as possible to VW's specifications. This turned out to be 6.5". Close enough!
We have 16' Bambi, and the Airstream maintenance chief said on his test drive he thought we didn't need any anti-sway or load distributing hitch at all, so we don't use anything at all. It sticks to the bumper like glue, and we've had no problems on the highway (so far!). It seems to be a plus that the ball is so close to the bumper, except when backing up to park the trailer sometimes, but even then it's no big deal.
So, everything works fine, the Touareg handles the Bambi with ease, and we are very glad we have this combo. VW scares the crap out of you with their warning statements, but there are probably some sound engineering principles unique to this vehicle that come into play. Would this work for larger Airstreams? I suspect so, but only to a point.
Anyway, hope this might help someone in the same position as we found ourselves just a few weeks ago!