The TN's tires aren't loaded (just foamed so they don't get flats (cross fingers)). I really only weighted it for snow removal and if I wasn't so lazy I'd take the rear ones off, but it looks hard. If I filled the tires, I'd be overweight moving it around.
The TC (not that I've seen it since this pic, been at the dealer since, ) has both front and rear tires loaded. You have to take the front weights on and off to get the loader on and off (which strikes me as silly, but there it is), and loading that won't get it overweight.
It's MUCH better loaded, still tippy feeling though. (in my big 3 hours on it before it went back to the dealer A WEEK AGO. not that I'm bitter or anything.