Never really felt like shelling out $120 for H&R wheel spacers. I came across these at some local douchebag speed shop for $14, so I thought I'd pick 'em up for my rear Pegs. They're 3mm and work pretty damn well...still able to use the stock studs too. My friend used two of them on each of his rear wheels on his S4 (see background) for a total of 6mm. Looks pretty good.