I bought a Trek 820 a couple of years ago and have had many problems with the rear wheel. Broken spokes, two broken axels. I finally upgraded to a new wheel with a freehub. To make a long story short; I feel like I've have way too many problems with that bike. For $275 I should have gotten a bike that would last me for at least several years without any "back-to-the-dealer" problems. I've been back to the dealer 3-4 times with an inoperable bike.
This is something else,I was going to buy this type of bike two day before my original wheel spokes on my trek CC started to break( I waited),glad I didnt.Went to wal-mart instead,no spoke broken over 500 miles,and the rims are aluminum on the wal-mart bike.Oh yes I stressed relieved them.
My trek CC is still ridable with steel wheels from my old roadmaster mountain bike.The rims are green.