I have a 2000 OBW with 74,000 miles. The steering wheel shimmies. The dealer said the alignment was correct and that the wheels needed to be balanced. That shifted the shimmy from being most pronounced at
30 MPH to being most pronounced at 70 MPH. A tire shop rebalanced the wheels and shifted the shimmy back to 30 MPH.Assuming the dealer was correct about the alignment, can anyone suggest alternate theories for the shimmy?