Merc S600 V12 TT?? Umm.. nice ride.... I would of been kind of hesitant to let them work on a Mercedez S600. I use to work at tire shop when I was in high school and always had scenerios like the one you just mention, except we used a special socket to remove them. Either way...I use to get some pretty nice tips when the rims did not get damaged or had to replace the stud.