Joined: Feb 2012
Posts: 19,381
Likes: 5,524
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Agreed with those who say 2mm is too little clearance. I see paint worn off and chipped frequently on close clearance frames, the crown's underside is a common spot for this. I have seen the results of accidents from something getting jammed in the tire/crown gap. Not common but it only takes one time to make your day a bad one.