ok, so, i ride a CBR 250 RR, second hand which means worn tires. heres my problem, the front tire seems fine but the rear is pretty worn down the centre and squared off, like its mainly been ridden in a straight line. i've noticed that when cornering i try and counter steer the bike so it leans nicely, but before i know it the rear feels like its rolling out, not really sliding. just wondering what peoples views are, getting a new rear tire soon, but im not sure if its my technique causing the slide or just the tire. Any thoughts would be much appreciated! Especially tips on doing it right!