+1 on the cupped tires. I have an 11 SG and it startrd making the same sound at 10,000 miles.
Same execpt mine started around 12k. First it was when leaning right then around 15k it was when leaning left or right. And tire wear is not covered by warranty.
So if I understand it right, you got 15k on the rear tire and youre complaining? I might get 11k maybe 12k solo on my 07 if Im lucky. The bikes are friggen heavy in the rear especially if 2 up. Hmm, I dont like what I am hearing about the new bikes, tires, IDS failures, wheel bearings etc
+1 (well +2, really) for plain old rear tire wear. If it is just a howl/whine when turning, its just normal tire wear. Started for me on the OE Dunlops at about 5k. Only heard it in left turns, later, it got louder and showed up in right turns. At 10k, I replaced the rear with an American Elite and it is gone. Same experience for my buddy's '10 SG...his whine started at about 3k.