I had them on the back of my 96 Maxima, with BFG Traction T/A's on the front. I know that you should have a matched set of four but I didn't...I don't know if it was the BFG's or the Nexan's, but I could never get the car totally smooth. It always seemed that the balance was a bit off. It was a bad three years or so.
Two months ago I went to Costco and purchased a set of 4 Bridgestone Turenza Serenity tires, and it is nite and day! The ride is smooth! They were expensive, but seemingly worth it.
I will say that the Nexan's wore very well. There is a lot of thread left, in fact I kept one as a full size spare, as I had an extra wheel.
HTH,
Zack