the easiest way is to remove the rotor, but not the only way, lastnite i did all five of my studs on driver rear side, remove tire, put car in netural, turn rotor to about the 9 oclock position, on a 2004 this is your only spot to remove and replace stud, knock out damage or broken stud, inssert new stud, most studs are fully rounded at the head, these will work but i found using the ones that are not fully round works best because of the limited space you have to work with if you dont remove the rotor, after you get the new in, use a lug nut to pull the stud in, you will not have room w/rotor on to hammer in, if you have use of a impact tool, this would be best, recheck after driving or take to a tire shop and have them check all lug nuts for tightness. hope this helps.