i need new tires on my TLS and i have heard that changing the rear tire to a one size under stock (in my case from a 190 to a 180 series) will help the bike turn in a little faster and more responsively. i was wondering if anyone has done this here and any comments, good, bad, etc??? and does it compromise handling at all? because i like to lean fairly low and use my whole tire and i just don't want to be running out of usable tire at the edges because of a smaller tire on the same rim size. anyone who's done this, let me know how it works, thanks alot.