My suggestion is to carefully unbolt each wheel and replace the nuts at the correct torque. I had a similar problem when the tire shop overtorqued my wheels. I couldn't figure out why the car would vibrate when cold, then steady up. A return trip to the shop didn't help. So I decided to rotate them myself. The shop apparently had ass-umed that the lug nuts were loose, and tightened them to about 150ft-lbs! The first one barely came out, and the second simply snapped. Naturally, there was no satisfaction bringing it back, and I wouldn't have trusted them to drill out the broken bolt in any event. So I took it to my favorite mechanic, who literally broke a breaker bar trying to free them up. In the end, seven had to be drilled out. Fixed that vibration, though.