15" but from what i can find, Ronal http://www.peachparts.com/shopforum...sale-wanted/269276-ronal-wheels-15-tires.html
Ronal Pentas indeed R9 is the official Ronal number I think. Very sought after in the States for some reason. Ronal made the copy of the original AMG wheel I believe.
What nuts do you use?, I bought some alloy wheel nuts but after checking with some chalk I found the orig nuts fitted the concave profile perfectly where as the new ones didn't ?
@WoodyLubber , what size tyres are you running? two different sizes on mine and i cant decide what to go for