i was watching the practice today on speed. One guy (i have no idea what his name is) was making a left hander, and downshifts from 3rd to 2nd and lost control. The commentators called it "wheel hop." Where the rear wheels actually were bouncing up and down. But it seemed like their 'wheel hop' is what we would call a bad downshift. Also another theory could be the brake bias. Not too sure. What do you guys think?