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?

[GriffGirl]

I agree that it's HIGHLY likely that your tires are out of balance.

It could also be that your car is out of alignment, or you have a suspension issue, and your rear tires are wearing unevenly, like cupping or wearing on the inside. After rotating those to the front, your car would handle differently and possible vibrate heavily at higher speeds.