The problem I have never done before… is that it’s hard? Can I do it myself? It’s an Audi 80 type89 1.6 51KW(70hp) If I can do it myself, what is the cost of such a bike bearing? Do I need a special work train? Can you give me the parts no. of the wheel bearings? And at ebay I found which ones but what are the good ones? or is the preload? Is that all right? Is that even original accessories?