im doing brands gp in a couple of weeks as it happens, but in the lotus not this isf. The isf would be great fun but the weight would take its toll on the brakes and tyres. The Elise just laps it up, excuse the pun. I will most likely track the isf, probably Bedford autodrome as its got plenty of room for error and a long straight to really let it go. as for carlimits, do it, really good way to learn what the car does when you run out of ability. i must do it again soon...