I have C63 AMG wheels on my car with H&R Sport Springs and I was looking to put spacers in the rear but I'm not sure if I should go with 10mm, 15mm or 20mm. So I was wondering if anyone has pictures of their C-Class with rear spacers to get an idea of how they look?

 

do you want them to sit flush? if you have a yard stick and measuring tape laying around place the yard stick against your fender (gently) and then take the measuring tape and measure from the edge of the wheel to the yard stick and that should give you an idea of what size spacer you need