I have been using Vittoria Pista EVOs on my race wheels for the past 2 seasons. All racing has been on concrete outdoor tracks. My experience has been the same as others, a very nice race only tire... My single complaint with these is that they often don't fully seat at the valve stem when mounting. Due to the removable valve core there is a larger than normal bump at the valve which causes the tire to sit up on the rim. Has anyone else experienced this? Any solutions?