Size advice.

[.:SAmSuNG:.]

I'm looking at a used planet x rt-57 on the bay but it says it's a 53 size which going from the link below is abit small for me as I'm 5.10".

size guide

Do you guys think I could get away with it with a swap of a stem maybe? It's not something I can try before I buy but I'm no pro and this is my first Road bike.

I really like the look of the bike but don't wanna make a big mistake.

Thanks.

 

[.:SAmSuNG:.]

The size they give shows the frame is suitable for a person 5.9" which is very close. Will give that calculator a shot.