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?

[JasonX]

I used to experience the same problem, because I always bought used tires, and never properly balanced. I also shaked about 60 and up. I can almost guarantee that it's something to do with balance and/or tires. I am not sure why you are shaking even at 90. Since my new tires, i don't shake at all.