I've been meaning to post about this... but I'm running 170s on a conversion, and I'm using clips, and I've had a few problems with pedal strikes. I've been thinking about switching over to clipless and I was wondering if that would make for less pedal strikes... Eggbeaters seem to be what everyone uses, so I'll probably go with that. if it doesn't stop the strikes, I'll probably get a new 165mm crank as well.