We've always ran caps at our concrete track, but I was curious to see what other options we might have. What kind of experience has everybody had running foam on concrete? How is tire wear? What compounds / brands? Natural or exotic? Tire dope? Are you truing them down, or running straight out of the pack? It has been about 18 years since I ran foams outdoors, and I wasn't old enough to pay any attention to what we ran or how we took care of them. Any help is appreciated.