Now just think about how many wheels you'd need to put under there if you were into low-riders with "pizza-cutter" wheels! (you'd have to be anorexic to get by with only about 3 of 'em at each end!)
There is an advantage to having big fat tires, although a buddy of mine would need to have at least a pair of "top-fuel slicks" sized ones to protect him! (I'd need one of those, myself!).