Originally Posted by
Homeyba
I think you're riding those brakes too much there Beanz!

Bet if you measured the wall thickness it'd be paper thing!
Yep, it had nothing to do with your weight, you simple wore out the rim. 20000 miles makes me think you used your brakes very sparingly, but eventually the brakes will wear through the rim. You probably kept your rims and pads clean.