WTF my car shakes at 60mph!!!! Options

[mrgrape]

k so recently i put my car up on the lift during auto tech in high school to
identify front and back suspension and check brakes
after that i rotated my tires and put the tires back on
accidently i torque wrenched one too much
after up on the lift, when i go to 60mph my car starts shaking like it does normally at 90MPH
so im like **** and only drivee 50 mph on freeway thus getting honked or stared at....
whats the problem????
is it b/c of tires or something else?