I have been having trouble on track days losing wheel balancing weights, the kind that are put on with double sided tape by the tire installer. I always lay down duct tape over the weights as a safety measure. I never had a problem before my Z4. The duct tape now gets cooked along with the weight mounting tape from the heat of the 330x30 brake rotors. I had to end a session last night because I could feel the imbalance in the tire. I thought it was rubber picked up on the tire but it was a tossed weight. Can anyone suggest a brand and type of weights with high temperature capability? Also what type and brand of tape should I put over the weights as a back up to keep them on?