YABT question about bike size.

[cheapgoose]

simple and quick question. thinking about getting a roadie. I've never even touched a road before. my mnt. is 17.5".

went to supergo, ried on a bike, the sales guy told me 56cm is what i'm looking for. the bike I'm thinking about ordering only comes in 54cm, or 57 cm. which one would be better for me?

here's the bike.

thanks

 

[Dessert Tears]

How did he come up with 56cm? If he fit you on a different model bike, all bets are off. The geometries could be different, and the distance measured (e.g. center-to-center, BB to clamp, etc) could be different.

I would only buy a road compact frame without trying it first, since they have fewer sizes. If you really want to just guess, go smaller. You'll be able to fix sizing problems without changing the frame.