i have a 96 maxima for my DD that i picked up for cheap and i noticed on freeway speeds the car feels very unstable. when driving on the freeway and hitting the bumps on the road the car seems the jump to one side. could it be the tires?? tires need replacing 2/32ths left. worn struts?? bushings?? alignment?? i checked for damage in the frontend but none found. all original parts on car, VIN tags all intact. thanks