this happened to me twice within a short span of time this afternoon whilst riding. bike: hornet 900 back tyre: Bridgestone Battlax BT54R Conditions: appallingly wet sealed road, woodville rd i'm in 1st making my way up to 2nd, not too quick, accelerating and then all of a sudden the back wheel loses grip and 'shimmies' alittle, notably to the right. both times it occurs, i'm on a straight section of road, i quickly ease off of the throttle and it settles. given the appalling road conditions i definately wasn't going spastic with the throttle and trying to imitate milandri's powerslide. here's a phonecam pic a took shortly after i got home. looking at the wear indicators i think it's almost time to get a new set what's that all about then? road condition? time for a new tire, perhaps?