headunit or display

Hello Renault Experts I need help I have a standard Renault megane coupe white and I would like to know what alloy wheels I can put on my car and what inch is the highest. I really like the Renault rs wheels but they come in 18 to 19" and am not sure if they fit mine Also Renault sound...

Thought that this article might be of interest to some forum members - the poster makes a very neat job of it and it doesn't look like too much work... Edit: And this thread, linked to from the above article is a useful discussion of the compatibility of various Alpine and Pioneer stereos with...