Actually sparky, on this one I'll have to agree with LT1. There have been instances where i have had drums that were cracking as they reached the limits of their use. Now consider, each mm of material that you remove is also less with which to dissapate heat. As such, you will also encounter brake fade along with reduced contact. And beside, Drums really arent that expensive. Saftey is worth $100 for a pair to me