G52 right? in 5th, they are almost the same as a w58. A 4.1 would be ok but a 3.9 will put you at about 3500rpm in 5th at 100kmh (thats what my grande did and it had 205/50/15s)
I vote to leave them dark. Also, those plastic bits are pretty much impossible to find. 3d printing a pair might be the go?
Whats the difference between the gx61 and crown mirrors?