ricer rims??

Hey,
im new here as a member, but i've been reading post for months. anyways. i have always wondered the same thing about the rims. and i think they just lowered their cars so much that the tire rubs in the wheel well or they put the smaller rims on the front to give it more low end and torque to act like gears. but the reason why we always see them like that is because they purposely leave them there to look cool.