Originally Posted by Rpracing1:
Tires definitely........Seem too many guys cheat with a berm..........If you hit a tire , it is your own fault..............JMO 
Agreed. The other issue with berm's is that as more and more people are "hooking the berm" the more and more dust and dirt is sent onto the track which usually takes away from the racing surface, and the more and more dust is sent up into the air.