Aight I'm a noob when it comes to tires..but i need a new one so bare with me...I went to a serivce station today to check out their tires. One of the mechanics told me that they have a bunch of take offs in the back that were used for only ONE track session...It was plenty of treads left on them and all. But the sides of the tires have all these bumps and chunks of rubber that looks like it melted off and stuck to the sides of the tires. Keep in mind that these are $300 tires and he's offereing them to be for like $60. They were brand new up till this weekend when they used it ont he track. Should I take this deal? Or should I buy brand new tires for like $120??? i'm using these tires for regular road riding purposes...but I don't want them to be like defective or anything...the sides of the tire looks kinda worn, but the service guy says that this will easily pass inspection and definetly useable...should I take it???