I bought some take-off 18 inch wheels and fitted them with 255/55R-18 Cooper Discoverer M+S tires. About $600 a set. Nice agressive tread pattern, good highway ride, and acceptable noise level. They are only S rated though. My stock 05 TT (without the off-road package) performs pretty well on level 2.5 to level 3 trails without any damage (so far). It keeps up with my friends Jeeps and modified pickup trucks. I've only gotten stuck once but I wasn't alone. My Cayenne and a Grand Cherokee had to be winched out of a deeply rutted mud and snow covered trail.

At a minimum I'd also invest in a 2-3 inch recovery strap (rated between 20-30,000 lbs) and a receiver clevis/D-shackle (assuming you have the tow package). Note that recovery straps are different than tow straps and you should never use a tow ball as an attachment point.

If your going to do self recovery, get a tree trunk saver or pull-pal, a couple of shackles and choker chains, and an all cast hi-lift jack. Some gloves, a shovel, and a flask of whiskey wouldn't hurt either.

 

For an offroad vehicle, I'd rather have something that didn't lift a wheel over every pothole. Why not get a lifted wrangler in addition to your cayenne, keep all four of the jeep's wheels on the ground, and keep the cayenne scratch and dent free?

 

^I've never understood taking an expensive vehicle and beating the hell out of it off road, when you can pick up something cheap and do the same thing with it.

However, I also find that there is something compelling about a fully outfitted RR, Cayanne, or other high end SUV...rugged and capable, but still looks "out to dinner". Personally, I'm not a big fan of an SUV that looks more like a car than a truck...it's like an identity crises. If you're a car...be a car, and be a good one. If your a truck, be a truck...and be a good one as well. You can't serve two masters; you end up doing both poorly.

J

 

Wow...are you planning to do anything as intense as in those videos?? Those vehicles are in general heavily modified and are a complete mess afterward. My friend took his new supercharged Range Rover to the RR dealership for their ridiculous "off-road" experience that essentially took the vehicle around a very small circuit out behind the dealership over some extremely cheesy rock mounds thrown together (This is in Florida). After 15 minutes he needed a new undercarriage piece, new front bumper trim, and a new tire. That little excursion cost him two grand. Obviously he was beyond pissed. These vehicles look tough in the movies, but you don't see all of the behind-the-scenes prep work, repairs, and expenses involved. In my opinion these SUVs are not designed for off-road use. They are highly susceptible to simple and expensive cosmetic damages and sensor failures when used abnormally, though I guess anything is "designed for off-road" if your pockets are deep enough. Just my .02

 

When I bought my LR Discovery 1 in 1998, the dealer sponsored an off road day at a fellow enthusiast/dealer friend's 900 acre ranch. The day started off with a staging ground meet and greet, PR care packages, etc. and then we went off in 6-7 groups of 10 cars each up, down, and around unmaintained forest roads/trails. At each "technical" section, there was an experienced person to coach you through it. The ground was wet/muddy in several sections as it was around the winter months. There were sections of steep inclines to climb, decend, and even travel sideways - it felt as if we would tip at any moment. One section had us cross a 15ft ravene on two pieces of lumber/logs - that was so scarry. Another section had us fording water up to the windshield - watching the car in front was like watching a Camel Trophy video. At the end of the day there was a nice champagne brunch and send off. I was absolutely amazed at the end of the day, what these cars are capable of with no modifications. My car sustained no damage whatsoever, and it was a great experience. Perhaps that's why I'm a bit biased. I believe these cars should be able to walk the walk, if they are going to talk the talk. I expect no less of my Porshce either, it's what brought me to the marque in the first place.

J

 

never wheeled mine but my old G500 with aftermarket wheels and BFG mud tires was awsome off road.

whats the smallest size wheels you can run on a turbo? Id do those wheels then some off road tires.. from what the owners manual says the porsche should do awasome with the all the gismos, but mud and snow are like drag racing, doesent matter how much power you have if the tires suck..

 

I had my winter setup of wheel, 18 inch, with an offroad tire (I forget which), and I went offroading.
More so than any other vehicle I have ever owned, and loved it.
It performed perfectly and without flaw.

It is very capable and I would recommend anyone to do it.
Watch videos on utube if you don't think it can outperform most comparables.