Us oldies will remember well the Castrol 6 Hour production race. Which was the premier production race in the world. Having been an insider (I built the engine for the Oakhill/Robbins Ducati team in 1977), I have a few stories to tell and thought some might find it interesting. For the younger reader some background https://www.mcnews.com.au/six-hours-a-year/ 1977 BMW Win Yes, it is true. Now I don't know to what extent every team on the grid cheated but it went on. Some breaches were caught and some not. In 1975 Metzeler produced an 18" 'racing' tyre, the C7. It was standard fitment on that years Ducati Super Sport models. It was a damn fine tyre, despite what the 'experts' said about it, and we had them on our bike because they were long lasting, had good grip and an excellent profile. There was no 19" version of that tyre and the BMW in question runs a 19" front wheel. Behold: I didn't even notice it myself until I saw the pic of the winning bike on the front cover of REVS magazine. Not that I am moaning because it will take me a while if I am to document all of our misdemeanors.