intermittent vibration at 60-80 mph passenger side area

...okay....get an alignment...where they will discover loose or bent front end components...if I hads me a cartoon right now we could look at which ones might have failed....could be as simple as someone really struck the curb while parking....one thing is for sure....some geometry down there aint right....take it to an alignment shop for a new adventure in lazer adjustment techniques~....wonky loose parts will make this alignment impossible and must be dealt with...that's what we aims to discover by requesting this~

well the front tires arent showing much wear, however the back tires are almost useless now, the driver back is almost to thread on the very inside before it hits the sidewall, the passenger back tire is similar but not near as bad as the driver side, but while saying that, I am not feeling this vibration coming from the back, this is a G35 S . if that does make any difference, I was told basically the car is a 350z chassis with g35 shell

has there been an accident sometime in the vehicle's history...carfax might help....but a laser alignment would be the "tell" we'd know what to porta-power back into position or which component to replace then~