sayshell

should work fine! The best way to round it off is xc, ride a couple km a day and in a week it will be totally bald.

you build them. Just take an echo tire and a kitchen knife (make sure it has teeth) and cut off the studs. After about a week of riding all the bumps and gauges fall off and it becomes perfectly round. Just be careful not to cut too deep. Trust me the best thing for cutting is a cheap kitchen knife. I can do the whole tire in an hour.