I tracked the X5 yesterday although I couldn't keep up with the Mini's I kept up with the A4's, 320i and 325i in the not so tight corners and the straights. I was surprised that the x5 can actually slalom through the cones used by the mini's but of course at a much slower speed. Emergency stops was also performed and I think the X5 did pretty well.

For the size of the X5 and considering that it's an SUV and mine is bone stock, the track performace for me is phenomenal!