I just heard about this at Putnam. I'll keep it in mind. The guy that told me about it said something like, "don't waste your money." However, hearing your perspective, it would be better for me as I can't change tires constantly, nor can I transport more than 4 extra tires when I'm racing. If I have a crew person with me, there isn't much problem in changing 4 tires very quickly; but by myself, I doubt it. The only time I change the tire is when the cords are showing.

Thanks for the advice about heat soaking.

Jane