you guys silly. all wheels get flatspots if you sit on a powersilde/noseblunt/blunt side for too long.
its very easy to get them out, just go bomb the longest hill in your area and do a ridiculous amount of powerslides the whole way down. by the time you're at the bottom the flatspots should be gone. if you're shits still sounds like an AK-47, bomb it again.
if you don't have any hills in your area, just do like kevin harris and those flatspots will be gone within a few minutes.....
as far as wheels coning(dr. newton),
turn them around(meaning if the graphic was facing the inside, make it so its on the outside) and cross rotate them(meaning take the left front wheel and switch it with the right rear wheel and vise versa) every 2 weeks or so and you won't have that problem.