[wconley]

What Chris said. In my early days of tracking, I took a BMW 325e (e stands for slow) to the track with some almost new PBR Deluxe street pads. Sixty track miles later I was into the backing pads on two wheels - literally no pad material left. The excess heat warped the rotors and the vibration was enough to break my exhaust. Lessons learned. It's not that no street pads will work for a DE, especially when you are starting out, but some just aren't up to the task of a novice driver.

On the other hand, I had a friend that raced Corvettes. He got the "lifetime warranty" pads from the local autoparts shop and just replaced them every week under warranty.