A friend of mine had a 2000 model. It was very very nice. Had good pull......BUT, It flipped way too easily. Yes, thats right, we were driving down the road ( a little slick, but not that bad) dont know exactly what happened, but we did a 180, the rear right tire popped which caused the bed to hit the ground, we did a double flip and skid 175 feet. luckily no one was hurt, so I can honestly say they are pretty safe. Check on the year you are planning on getting, I heard there was similar problem to the early XJ ABS problem or something with the brakes. Hope this helps.
ps, not trying to bash the tundra or anything, it was very nice and stron, but I wont buy one after the accident.