Seat vibration and steering wheel shake

for a couple of months now I have had shaking in the seats and vibration in the steering wheel. I got new coopers back in april and was thinking that might be the problem. But after taking it back to get balanced and road force balanced multiple times, it still isnt fixed. The tire shop even replaced the tires and it still isnt fixed. The guy at the shop said he had to put 5 oz of weight in my passenger side front wheel and said that 5 oz is abnormally high. the tore guy said he thinks my wheel might be misshapen, maybe from hitting a pot hole or something.
Does any body know whats going on? Should i buy a new wheel?

 

Did it do this before you got new tires?

If it didn't occur until after the new tires. The tires/wheels need to be properly balanced with the Haweka Adapter.

Link:
https://www.google.com/search?q=Haweka+Adapter&ie=utf-8&oe=utf-8

 

Finally got the tires balanced today using the lug centric adapter and roadforce. Rides smooth as butter now. To bad the original installer was to dumb to realize he didn't know what he was doing before he replaced my tires for free. Haha thanks for the help jimmyh

 

What he says. Had mine 'balanced' without the adapter, and I had the same thing you have.