I haven't been able to keep my 3.91s quiet for more than 1,500 miles or so for years. I just replaced a set of noisy 3.91s that had about 3,500 miles on them. I have put up with the whine for a couple of years, but it finally got to the point that I pulled them. U.S. Gears were in it before. The good Dr sent me a set of Motives this time.

We'll see how they do. I just got them in last week and have less than 100 miles on them so far.