Yea i know i spelled fat wrong but i am a little in the big side. 280 lbs to be exact but i wont say my height anyways i like biking and i wanted to know if theres a specific thing i need to ask for when i buy a bike (in a shop). Every time i go biking something always happens to my bike like the wheel pops or something with the chain or something and i thinks its cuz im heavy but i don't know show i ask for the workers at the shop to put heavy duty tires or what?