hey i just got my rims +tires and while i was inspecting it, in the inside, there's these little metal clips, and i looked at it closely and it said like 6 ounces on it or something. 2 of them had like 2 or 3 each, and the other 2 tires had a whole s--tload on there..............i'm just wondering what's the purpose of it on there, otherwise i'ma rip that off. is it there to make the wheels weigh the same or sumthin? ?by the ounces?