I am picking up my new Q5 in March and was going to have running boards fitted to reduce the possibility of dents from people opening their car door on my new pride an joy. Audi have quoted £1,500 parts and labour. Ouch! I have been looking at purchasing some online but they are predominately made from stainless steel, which will eventually corrode and look unsightly. Can anyone tell me if the genuine Audi running boards are made from an aluminium alloy or stainless steel? I like the look of the genuine items, I just don't like the price - I know that makes me a skin flint.