i already posted the question at the mechanics forum but i want some insight from heavy guys like me who have gone through some rear-wheel spoke busting. i ride a pedal forward bike (fuji saratoga 7-speed) which means that i'm always seated back on the rear wheel. the first 3 busted spokes happened in a week after i changed the factory 2.1 in. tires for kenda quest 1.5 in. i went back to 2 in. wheels but anyway busted two more last week after catching a couple of deep potholes. a local wheel builder blames it on poor manufacturing. we all know an under $400 bike doesn't come with first grade components. anyway, tell me your story and what you did (or are doing) about it.