hello everyone, I can feel my bike flexing specially when I try to hit high speeds. Is there anything I can upgrade to minimize it? components? wheels? I think that mine is 2009 model :O

Note: I'm around 233 lbs -.-! I can be my fault, not the bike's

You have described normal operation given the quality level bike you chose coupled with your weight. Don't worry about it. Unless you are making your living on the bike, it doesn't really matter. In my opinion, though, the wheels on such bikes are not designed to cope with that weight of rider. A pair of good strong wheels will minimize issues like broken spokes and dented rims, but don't expect magic.

By the way, I am a Trek dealer, so I know that bike well. The 2.3, at twice the price is more than twice the bike. That might well have been a far better option given you appear to like to ride fast. Better frame, fork, full 10sp 105 group, better wheels, yada yada....

+1. A big man who can put the power down will be able to flex almost any bike at least a little bit. Do you think the majority of the flex is coming from the frame or the wheelset you have?

Yes, you will get flex. Some more than others. I started on a Trek 1000. Great bike. I was alarmed one night when I put it in the trainer & observed how much the BB moved around under torque. However, nevr had problems & I'm a big guy. My current Cannondale flexes far less, but still flexes. Go ride & enjoy.

I think the frame :/ not sure if the wheels need replacing? cuz every time I corner, they touch something and slow me :/ anyone can explain this?

Never had problems with broken spokes or dented rims before, and not sure about 2.3. Trek doesn't look nice unless you buy a freakin 6.0+ bike or projectone it, which is very expensive :O

Not sure if stronger wheels will mean lighter? possible? should I be looking at a carbon frame?

Ummmmmm.............If wheels are rubbing, it's a problem, a wheel problem. I found hand built 32 spoke rims wonderful. No flex / broken spokes.