I have a 2002 c230 coupe... and honestly dont much bout rims and quality associated with it. I want to get 18 or 19s on it... Would like to lower alittle. not like a ghetto low rider.... but just to make it sporty enough. What all should i take into consideration when choosing the size? And also how would i know if i can take the cap off the original manufactures rim and put an MB logo instead....... any help is appreciated......thanks in advance!