A few months ago I got a new Trek 8.4 DS. It’s a hybrid bike, although it looks a lot like a mountain bike to me. The tires are thinner than mountain bike tires and it seems quicker than any previous bikes I’ve owned. I love the bike except for one thing – the back brakes. From the beginning they were noisy, but I thought the noise was something that would go away with time and use. Instead it got worse. I finally took it in to have the bike shop look at it. The tech worked on the back brake and thought he had it fixed. I took it for a test ride while he waited on some customers. When I came back about 5 minutes later it was making the noise again. So, I’m waiting for them to find a solution. Hope they fix it soon. I really do enjoy the riding.