The 4.6iS comes with the rear ones from the factory and I purchased a full set of the fiberglass ones from eBay just for the front flares. They are not OE and have been fitted with mini aluminum rivets and I love them for the price. I still have the rear ones and would probably sell them if anyone was interested. These are the ones I purchased. They are already finished in black and did not require painting.

https://www.ebay.com/itm/143318218499

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02 Imola on Black Dinan S2 4.6iS
00 RoyalRot on Sand/Black 740i Short Sport