It's time for me to retire my nearly 15 year old Trek 5200 and replace it with a 2014 Trek Domane. I was at the bike store yesterday and noticed that the frame angles have changed considerably since I bought my 5200. My 5200 has a 58 cm frame, but when looking at the 56 cm Domanes, the top tube looks pretty darn high, making me wonder if I need a 56 or a 58 cm frame?
I'm *almost* 6'1" tall, but apparently shrinking already do to age (my 40th birthday is just around the corner) or because I slouch too much (I weight 165 lbs if that matters.) The sign on the Domane at the bike store said that the 56 cm would fit riders up to 6'0"... which is obviously pretty close to my size.
What should I look for when determining if I need a 56 or a 58 cm frame since I seem to be 'right on the edge' between the two sizes? In theory, a 56 cm should be a tad lighter... would there be any reason why I shouldn't go with a 56?