i to am the owner of a ybr 125 and have experianced the tyre problems. my biggest problem with them is there not wide enough to safely lean into a dry corner let alone a wet one. i have had SEVERAL close calls when ive been on a a sunny run and have almost come off due to underestimating the tyres widths. i think well all just have to live with it and get a bigger bike with real tyres ASAP