Hello, I have a new Trek 7.1 FX, that I've been riding about 15 miles a day, 5 days a week for the past two months. During that time I have broken 2 spokes on the rear wheel, and have had to take it in for repair. The shop where I bought the bike repaired the broken spoke for free the second time. The first time I was no where near that shop, so I took it into another near by shop and paid to have it repaired.

I am a big guy. Over 6 feet, and about 275 lbs, so I am sure that my size is a real strain on the wheels. The city that I live in has very rough roads as well so I am sure that doesn't help. I have kind of been thinking about buying a beefier set of wheels for my bike. Can anyone here recommend a good wheel set that will work on the Trek 7.1 FX?

I have looked around online a bit, but the problem is that I am not really sure what I am looking for. The wheel size is 700c X 35, but I think the rear wheel is a free wheel or something rather than a cassette. These terms are outside of the scope of my understanding at this point, and I am hoping to be educated.

Thanks.