I just bought 4 winter rims for my Fit Sport at Costco. They sold me rims based on this book they had and it listed the 2006 Fit(which doesn't exist, it's 2007). Anyway, they are 15x6 400:1. There's some other numbers here and there on the rim but I can't for the love of me figure out which number correspond's to the offset because I would really like to know before putting these rims on.
I'm going to go check the rims and i'll reply with the other numbers I find. Hopefully someone will know the offset from those numbers.