I knew I'd maybe catch some slack on this post. But like I said, my tires are 16 year old BFG T/A's. Have maybe 4000 miles on them if that. Car sits in garage most the time, gets about 250 miles a year put on it to car shows. Tires look brand new still with no weather checking at all, and to answer someones question, YES I do dress both sides of the tire but not the tread part once a year at least. Personally I can't see replacing a set of tires like this until I start seeing problems with them. In a couple more years I may think about new ones.