Bike measurements vs my measurements I would like to buy a used Rose Pro DX Cross bike (model 2014 or 2015) and its size is listed as being ST-56 cm and TT - 54 cm. I'm 178 cm in height and my inseam length is 79 cm. Do you think it's suitable for me? I don't want the top tube to hurt my groin when I dismount it to wait at traffic lights or anything like that. Thanks a million! 

Best wishes,
Florin
The only real way to determine if a bike fits you is to sit on it and ideally ride it.

In addition to making sure the stand-over clearance and set height range are OK, you need to determine if the position of the handlebars relative to the seat works for you. Lower, forward bars means a more aggressive riding position, higher rearward bars allows a more relaxed riding position.