Wheel Vibration

[Robs-se]

I'm getting the nasty vibration at 60-70 mph. Tracking is all ok, tyres are at correct pressure and there is no sticking of calipres etc. I know the offset of the wheel isn't quite Vauxhall standard at 35 eta 17/215/45, but i wouldn't have thought this would cause the vibration, maybe just a bit of handling error and scrubbing on the arches.
Would a dodgy wishbone contribute as the passenger side front looks to be a bit lower than the drivers and also scrubs the arches more when going over speed bumps.

Or can anyone think of anything i've missed?

[Phil69]

I know it may be an obvious one but have you had the wheel balance checked?

[Robs-se]

i have, and wouldn't that pickup if the wheel was buckled as well

[Phantom]

this has been discussed before and it seems to be down to the lower wishbone bushes wearing

[Robs-se]

Will definatley change it now seeing as MOT is next month as well