nice one alex baby!haha muda fukin snakes! i really dont like new members chat how you all try and out do each other, new member 1: or8t ladz i woz thnkin ov buyin som rim,z lolz for my bike init? new memeber 2: like dude learn to spell dude or you wont get validate (bear in mind this guy is not validated) member: try and improve spelling and topic description in future.*.followed by explantion.* new member1: ok thanks mate. new member 2 : told you you stupid ass fool' had to be done! to answer the question, basicaly rims are drilled out to remove the metal that is not needed in the rim, it saves a little weight but all these little things add up, you can do it yourself with correct equipment but remember not to drill the join of the rim good luck mate! if you fancy having hedgehogs instead of holes check out onza also try improve your posts