Hi guys, I have been reading these post for a while now. I started before I made my mind up to buy a 2010 850 xp eps. I really love the machine. The power and ride are second to none. My problem is the rear end noise/problems. I have had it back to the dealer twice to have it checked out and I was assured that everything I was hearing was normal. Six months and ten days later a guy that I work with takes the plunge and buys a 2011 850xp. As he is thanking me for recommending the Polaris I tell him we should get together and go riding. I also asked if the noise in the rear end has bothered him and he said he didn't notice any noise so I thought I was being over critical of my machine. When we got together to ride I asked if I could take his machine for a ride because I was still wondering if the noise that I can hear is normal. His machine didn't make a bit of noise when compared to mine! Mine clicks and howls like real aggressive tires going down a paved road all the time. Since it was new and I have been told two times at the dealer that "that's just the way the new Polaris 850s are" Now my warranty is up I can see myself getting stuck with a huge bill because they will find a problem this time. It really sucks that someone puts $10,000 of their hard earned money on a machine and still has to worry about putting more money into it with only 12 hrs and 105 miles. My last machine was a Honda 450es that is ten years old with over 3700 miles on it and all that I have had to do is normal oil, grease, filter changes and two batteries. I will let you know how things turn out at the dealer. If they tell me I'm stuck with the bill the Polaris will be headed down the road. I wont stand by a company that doesn't stand by it's customers. This seemed like the best place for me to vent my anger. Thanks.