Id put 6 of your watery american beers on you not being able to notice the difference between a 25mm or 30mm wide rim in a blind test. Ill provide all thats required, you just need to show up and prove me wrong to win your 6-pack (my comment is meant as sarcasm, I mean no offence, other than to try and add a little levity) As a reminder to all of us, What the pros do, and use, has little to no bearing on what works in the real world of owner maintained, and hack ridden bikes at half...