Hey guys - Anyone playing on asphalt, or in the grass, where your brake rotor gets a little more abuse, better look yours over real good, I had 4 cracks in mine. Not a good thing, if it was to explode at 100mph. Got one coming from california next week. Yami dealer in Green Bay, Wis., couldn't believe that it was cracked, until I brought it in. Check yours real close guys.