Hi guys I know my copen has 15 inch wheels, I'm looking to change them as they have seen better days. It's the only thing that will be non standard so please don't shoot me. I've looked through the manual and cant seem to find the exact specification, read somewhere if I dont get it right it could fail the mot if too wide etc. Sorry if obvious but I know nothing about wheels, does anyone have the exact measurements I need for wheel and tyre size? Thanks in advance appreciated.