Wes, i've been after you on MSN but you've not been about much this week!
Anyways, Golf = 7" & E30 BMW inners are 5 1/4 " [i know you didn't ask for them but hey, what the hell..]
P.S.. If the reflecter is fooked and needs re-chroming it probably wouldn't work to well as the water gets bewteen the metel and the chrome plating on the rear of the lamp which causes rust which fooks up the reflecter!