Steve84N
MB Enthusiast
It's worse than that because the W204 is an 8J but the ET25 W205 is a 9J so it sticks out 32.7mm which is a no go!The W205 front wheels will be 20mm closer to the wheelarch than the W204 wheels.
You could have problems with rubbing.
W205 C63 ET's are Front 25, Rear 57
W204 C63 ET's are Front 45, Rear 54