i don't if it will be too big and the ride might be rough ,what you think should i buy them or not lorinser rs8 21"

if you don't buy them, I'll buy them. I have a 07 S550 and 21" would fit PERFECTLY. Where did you find them? could you share with me the source? I apreciate

With the lowering, it may work, but would probably have to go with a super low profile tire..... xxx/20/21 perhaps? Would look great, but don't know. Don't think I would do it. Has rim buster written all over it.