There are holes in any and all reasons but that is not what was originally posted. Matter of fact, it was answered quite quickly referring to the tire rating. Good enough reason for me, I'm not venturing up there again unless I have to.
Now, would it occur to anyone that sometimes someone may just want to go fast? Can anyone here specifically say anything about another's qualifications, training, experience or thought abilities? Don't kill the messenger guys, and never think he couldn't easily do what you wouldn't even try. I won't jump out of a perfectly good airplane but plenty of people do it, plenty of people die and plenty more are injured. So what?