Z32s in good condition with relatively low miles (85k or so) are becoming harder and harder to find. If you have taken a real good look at the car and believe it to be in good mechanical condition, the possibility of one bad wheel should not make or break the deal. If on the other hand, other issues are bothering you, this perhaps should be a deciding factor. Step back, take a deep breath and if you really want the car.....hammer out the best deal that you can make and don't look back. Good luck!