I bought a new set of wheels and decided not to go with the Rubinos again, and try the Mich Krylions. Bad mistake, third ride out with the new wheels and tires I flatted with a huge cut in the rear Krylion. Looked at it as bad luck and not paying enough attention on my part. However 2 weeks later the rear had a slow leak, that was enough. Not to mention the main reason I switched back to the Rubinos was the Kryloins felt sluggish and not nearly as fast. I had a full year with the Rubinos before and never flatted once. Glad to have the Rubinos back!