Not legal, but I once street rode a set of slicks I got free when I was first starting out. Back then my idea of riding was commuting to school, going shopping, or hanging out at Weston Rd and Finch, but never rode in the rain. My kickstand leaned my bike more than I did, so it was no big deal. Until one day it rained while I was already out. I was scared out of my mind on the way back to Mississauga on the 401 from Yorkdale Mall, but in retrospect, it was still no big deal - it would need to be a massive downpour with pooling like a few nights ago to be a problem. Racers can stay out on slicks when it starts raining until a certain point. Not to say I recommend it - follow the law. LOL.