My Trek 1.1 which I bought in 2010 (a year ago last spring) has been a very enjoyable bike to ride. I am concerned however, about the life of the drive system (the chainrings, rear sprockets and chain). Had them replaced this spring for a cost of $210. This seems to be hard to understand when I used my old Centurion Le Mans for many many years and never even replaced the chain. I am told by the LBS that in two or three thousand miles I will have to replace everything again. Is this normal on modern bikes?
On the flip side the Bontrager front tire has shown little signs of wear in three thousand miles or road cycling. This surprises me because all the reviews I read talked about these being cheap tires that should be replaced. (I did replace the rear tire with a slightly more expensive tire). I am always careful to keep the tires inflated and brush off any debris before and after riding.