Im stressing out, My bro bought a set of ADR M-Sports for his C320 sedan size 18x8.5. The front wheel doesnt clear and is touching the shock, the tire shop didnt try the backs. Can i use a spacer in the front to make it fit??

Spacer will help but I think you should get the correct set of wheels for your car. If the wheel touch the shock, that means it has wrong offset and/or size.

Bring it back and get the right wheels for your car. If you can't gring the wheels back and have to buy spacer, don't forget to buy longer bolts too.

What spacer fits the car correctly? Is there a company that makes one that is perfect. I need a 10mm that fits and H&R does not.

this is the correct answer

I understand this is the answer but is there a spacer out there that will fit the front of the car and help the curent situation? H&R 10mm will not fit the hub. Can someone please help answer the question with the same rims that are already purchased. IS there a 10mm spacer for the front of the car that fits correctly with the bolt pattern that matches. Thanks