Nothing super special about the Tahoe - it is the LS version, so it has the heavy duty towing package w/ 4WD and the big engine. The wheels are 20 inch but not off-road type. There were probably about 3 or 4 spots between mile markers 18-25 where the clearance was just about maxed out from the berm between the the wore tracks but I was never really worried about "grounding" out. Be sure to take tons of mosquito repellant - never seen anything like it. And I can't be sure, but when I got back home to hill country, I 'found' a 18 inch rattlesnake by my back door, the next day, right next to where I had thrown my surf bag. Soooo, I don't know if he hitched a ride back with us (thinking about rattler roadtriping with me - don't know whether to scream or laugh)... could have just been a coincidence, but my advise, keep your bags and tents zipped and not laying around open at the campsite.