I'm quite happy with my current UST tires without any flats for good 10 months now and still retaining good amount of air everytime I checked. But I'm always far behind my buddies during road rides which is the majority of my rides. Is there such thing as a UST slick tires? Or should I just buy another wheelsets and run it with tubes instead? But I don't know what to order and please help me with the specs. Rotor specs is also confusing. I currently use crossmax sl ssc with xtr disc brakes and hope you can help me.