Help with Offsets/Tire Sizes for 2013 C300 4Matic Sport




I have a set of wheels that I want to throw on my newly-acquired W204 (2013 C300 4Matic Sport) for a square setup.
The wheels are 18x8.5 and have a standard offset of ET50. I have asked the manufacturer for a set of spacers and corresponding wheel bolts and they are suggesting the following:
Front: 5mm spacers
Rear: 10mm spacers
With that configuration, I will end up with:
Front: ET45
Rear: ET40
I think I have room for a bit more offset to have a more flush look. I also want to go with the tallest tire possible and I am considering either 245/45/18 or 255/40/18 size.
What are your recommendations for optimal offset and tire size?
Much appreciated.




I have a set of wheels that I want to throw on my newly-acquired W204 (2013 C300 4Matic Sport) for a square setup.
The wheels are 18x8.5 and have a standard offset of ET50. I have asked the manufacturer for a set of spacers and corresponding wheel bolts and they are suggesting the following:
Front: 5mm spacers
Rear: 10mm spacers
With that configuration, I will end up with:
Front: ET45
Rear: ET40
I think I have room for a bit more offset to have a more flush look. I also want to go with the tallest tire possible and I am considering either 245/45/18 or 255/40/18 size.
What are your recommendations for optimal offset and tire size?
Much appreciated.
https://www.wheel-size.com/calc/?whe...cl=30mm&sr=0mm




https://www.wheel-size.com/calc/?whe...cl=30mm&sr=0mm
Brabus indicated offset of ET45 in front and ET40 rear - basically said it's the only configuration option they will offer me.






