Current Projects chat and miscellany

are really tight clearances like this dangerous. I mean the clearance is a tight as it gets, you can even hear the brissles on the tyre clipping the crown race, but it's still completely free running and without any real friction. Anyway I have 28's on there and I was just wondering if a 25 would be better/safer ?

You'll get grit scoring the paint. Otherwise your ok. Does it get very close to the downtube though? That's a different story.