Yep tried, knocking it over to 'manual , makes no difference. Wheels were played around with(not by choice!), when the alloys were done up. Like I said , I think once again , I am now looking at two faults originally but now seeking the fault that was being hidden by the caliper fault. I'm confident the boys will eventually find it. I'll mention brake disc runout, and by Friday I'll have googled and learned what that is
Addit: Just googled brake disc run out and think it can be ruled out. There is no vibration on braking, only at 70mph approx. Some types of road surface make it worse (no not cobbles). I can be quite happily sitting at 70mph and surface changes, hello vibration, same surface at a different time, no vibration. The run to London and back, was a nice long run to check if there were any factors that brought the vibration on, but there is no rhyme or reason behind it.
I can only think there is something that every now and then all factors come together and the light vibration appears. The only common factor is road speed.
Lost wheel weight would be a good starting point as said. Try balancing them before getting on to more expensive stuff like prop etc.
