Wheels that were made to fit regular c class cars and c63 the same? I see alot of regular c class cars with wheels. Wondering if those wheels would work on a c63. I remember noticing on a site that a certain wheel fitted a reg c class only and not a c63. Any thoughts?

As long as the rims can clear the brakes I don't see why not. The main issue is clearing the big brake calipers

Offsets are ET45 and ET54 front and rear respectively, otherwise its a no go, wont clear big brakes and you may rub if they are to big or stick out of the wheel wells.

Sucks how the C63 can't fit low offset rims

i wonder wats the lowest offset people have fitted without fender modification

I tried fitting my 19 x 9.5 et41 Brabus Mono V rear reps from my w204 and it was a no-go. Using 265/30/19 tires, it stuck out by about 7-8mm too far. I see that Carlsson lists their 9.5 rear with et45 as a rear fitment, but I imagine you will have to use 255 crossection tires. I didn't even bother trying to fit the 8.5" et37 up front.