[clan_salmons]

There is a ton of mixed opinion about Cayenne/Touareg and weight distribution hitches. I hear no, but darned if I can find it in my manual. I've read a number of comments that the steel in the factory installed hitch is heavier than many class IV hitches. The tag on the hitch lists the same specs with or without a WDH. The main concern is the unibody and how well it handles the stress. I have conducted an extensive search and not found any record of a hitch failure.

From what I can discern the general opinion is:
Air Suspension - no
Steel springs - yes

The TDI is a great TV, but they are still commanding a higher price than I paid for my Cayenne a year ago. All things considered, an appropriately sized WDH isn't going to bother me.