Ok ill share a bit more advice...firstly don't drill over the join (opposite side to the valve) just incase you didn't know,as this will kill the rim/wheel and it does make your rims lighter but only by a few grams and you really don't notice it...drilling your own wheel is purely for aesthetics (looks) and it will probably still be heavier than a try-all or echo..i drilled my old wheel and i didn't notice the difference and to be honest it looked pretty shit..if you wanna chat just add me to msn mate (address is in my profile) Hope this helps further zoo baby!