BTW...everyonde doesn't have those rubber round thingies.

They are an accessory for e53 X5s sold in the USA. In some BMW markets, the alum footplates are standard (like Australia).
Just an FYI as to why some may ask for more detail...not every BMW market is the same or come the same.
See item #10 in diagram below...these "naps" are the black round thingies found in the alum side foot plates: