I found a huge peace of metal sticking out of my tire this morning. I took Mo to the nearest tire shop to patch it. When the tech took the wheel apart he shows me that the very thin layer of the rubber inside the tire is peeling of. He said it is dangerous to drive like that because the tire might explode. He was trying to sell me new Eagle LS for $235 (what a jerk) of course I refuse to buy that and I had my tire fixed for $20. Now I want to use the warranty I bought. Road Hazard Protection; how exactly it works? Should I go to any dealer and ask them to replace it? Should I call Nissan first? Please guide me to the right direction.