Definately something rotating. Engine revs freely and smoothly.. have tried revving engine when stationery - lovely.. and also putting the car in Nuetral when coasting and freely revving - that also makes no change. I feel the vibe still there, but not as bad as when the car is pulling.
Might plumb for a quick rebalance incase I have messed something up.. but then look into CV joints.
Haven't replaced any split boots, and all looked well when changing the discs last weekend..