That's all you! Never heard of a ruin...what style of bike is it? You might find a 54 cm bike too small. That's the problem with ordering online - you can't ride it first to see how well if will fit you. If you are willing to up your price range, [MENTION=387585]AciD[/MENTION]Fast had some good luck with a Mango (see thread here: http://www.bikeforums.net/commuting/...term-test.html). I'm 5'11 and 54 cm is too small for me when talking about something with a road bike fit.