I am looking at a new 2008 Trek FX 7.9 that has been marked down to $1400. I currently weight 250+# and like all of you exercising to lose much more. The FX 7.9 currently has 700C wheels in 20 in the front and 24 in the rear in 2X pattern. Will these wheels be strong enough for my current weight till I lose weight ?? I will not be racing or anything just riding to lose weight, that is all. Thanks for your opinions and any info.