Bought a 2004 520 just 3 weeks ago - the stock wheels for this year / model have 36 hole Shimano LX hubs and Bontrager Maverick rims (double walls) holding up well at 200 miles and counting under my 270# even though I have whacked one curb at speed so far. No apparent wheel damage -a little touch up paint and a dozen bandaids put me back in business.

P.S. I swapped the crank for a Shimano LX - if you have any significant hills would advise you consider the same. (Requires a new bottom bracket as well)

Am considering purchasing a Trek 520, but my weight makes me nervous with a road bike. At 5'11" and 300lbs, I already have a Navigator 500 which suits me fine except for the handlebars which are driving me nuts... need dropped ones instead.

From reading the specs, it has wide tires, 32 spokes and seems like a great frame. Will this thing hold up?