(most) benz OEM wheels have those small holes in between the bolt holes on the face of the wheel.

what are they for?

they are used to hold the wheels at the factory during mounting.

The small holes on factory and AMG wheels are used to help secure the wheel alignment machine to the wheels. Saw this demonstrated last weekend at our local M-B dealer.

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2000 E430 Sport (European Delivery)
Brilliant Silver/Ash Leather
Brabus Leather/Wood Sport Steering Wheel
PowerChip
Euro Front Bumper Strips, Debadged
E55 "Carbon Fiber" Door Pillar Trim
E55 Tail lights
E55 AMG/Bilstein Shocks
Eibach Springs, #1 Pads
H & R Sway Bars
Speed Yellow Calipers
18" x 8" SSR Integral Wheels
245/40ZR 18 Bridgestone Potenza RE960AS Tires

1986 Porsche 944 Turbo
88K miles

Most quality aftermarket wheels have those holes as well, not just OEM.

I asked the same questions before and was told they were for ventilation???

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... Kerry

126 tailed by a 203, 129 leading the pack.