Originally Posted by
DanBell
Full-time professional job: suit and tie
Part-time job: slacks, with decent shoes, and a button up shirt, tie optional
For an interview at a bike shop, I'd probably also bring a shirt to change into in case they ask you to do a bit of work to show you know what you're doing.
Maybe I'm weird, but I would roll in with normal attire. I work as an auto body tech and if you rolled into a shop asking for a job in a suit and tie, you would be laughed out of the place.
As someone going for a job to be an apprentice, only thing that really matters is enthusiasm/passion and well, it seems silly to drive to a bike mechanic interview.