[PaulE]

Originally Posted by 10/10ths

.....if the shop is mounting the wheels, they may be over torquing the wheel bolts. This can warp a rotor and cause similar vibration

We used to have this all the time on my wife's 1999 Audi A6 Avant - anytime we took it somewhere for service other than an Audi dealer and they took off the wheels we ended up with warped rotors but that car it only affected brake pedal pulsing, not steering wheel vibration.