Joined: Jul 2007
Posts: 8,631
Likes: 3,543
From: South shore, L.I., NY
Bikes: Trek Emonda SL7, Cannondale Topstone, Miyata City Liner, Specialized Chisel, Specialized Epic Evo
The 105's are a tad stiffer at the lightest tension setting then my 540's.
Thus I prefer the 540's as they easier to release from.