Anyone have the GBC Dirt Tamers? I have had a problem with the sidewalls,I'm not sure if its rocks or if its the wheel pinching the sidewall after I hit a rock rather hard.I have the ITP type 6 I'm thinking its is slicing the sidewall. I replaced one of my front tires after a sidewall slice, and when you try to plug them they seem to tear more. Today I had my rear tire do the same thing, close to the bead and a slice after hitting a rock hard. I'm ready to go to the Big Horns I can't keep buying a new tire every time