We have had our V6 for 3 or 4 years. It had aftermarket alloys when we got it and always had a slight vibration around 60-70 mph. Nothing major but slightly irritating. A bit of light investigation and chat over the years only ever got the diganosis 'they all do that.....'.
Well, if this is you, fit spigot rings! I read somewhere on here that the slight vibration is due to the new alloys not centre-ing exactly on the hub due to the differences in their diameter. This is indeed correct and, after some careful measurment, I ordered some 73.1 – 67.1mm rings from Spigot Rings R Us 5 Cedars Business Centre, Avon Road, Cannock, Staffs WS11 1QJ £4.74 delivered.
Basically, they took half an hour or so to fit (easy job) and the van runs absolutely billiard table smooth now. One of the best £4.74's I've ever spent!







