Could you set out the timing please for the two days as I am staying some distance away. Plan to have a Merit Connaught as the Big Bird car with Vintage parts. Agreed a wide Indy car might not be so good, the roadsters are actually quite narrow in track. Not sure that anyone as ever used Silicone tyres at Bordeaux, we often use Yellow Dog urethanes which have excellent mechanical properties. Really very little different from Ortmanns.