Well, people say that you can't get any bite from an American Racer, but obviously seeing that picture and seeing you run in person your not having difficulties. Some of the guys with the big horses around here run an H just because with a D they will shred it in 2 laps, they don't like the A because it is synthetic rubber and glazes over real bad. The H is natural harder rubber and in my opinion would be a step up from the Mccreary. I would hate to see what your car would do on the softer tires, maybe flip over backwards. People say that three wheelin isn't the fastest way around, but it sure does look cool. Good luck the rest of the year, your a hell of a driver.