bicyclepost

Hey everyone, so I recently bought a touring bike that was built with a mountain bike frame but am confused about the sizing. When I was in the shop the employee measured the seat tube to be 54 cm which fits me and I test rode the bike and was comfortable. I later noticed the receipt said 19" bike and found the bike online (showing a friend as I haven't picked it up yet because they're making modifications for me) and it said it was a 49 cm frame. I tried researching this sizing discrepancy but haven't quite found the answer I'm looking for. But apparently my mountain bike size is 19 inches but my road bike size is 54 cm which are not the same. Can someone explain this to me? Will this converted mountain bike be big enough for me to tour with comfortably? Thanks in advance.

fietsbob

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