I cant give you the exact measurements, but be carefull you dont close them up too much. Especially in a rag top, there is so much body flex, that there is the potential for close gaps to touch when the the body flexes when you drive around corners or when jacking up to change a flat. My coupe measures about 5mm (sorry Im an Aussie, don't know the inch measurement), but it has had repair work done in the past, so ist not too reliable.