Does anyone know what the Mercedes specification for the facelifted SL 280 (2001) are?

I need to change mine and all the aftermarket sellers I have been to have a 300 mm vented for the front and 290mm solid for the rear.

Giving mine a quick measure, I have 335mm vented on the front and 300mm vented for the rear.

I am now in an argument with one who says that someone must have uprated my discs at some stage. I doubt it as the car has been owned by a retired couple who would not know where to begin an upgrade!

i cannot find any reference in the handbook to the sizes and wondered if anyone had a Mercedes spec sheet?