I just got a new stock MT/R. I noticed a slight pull to the left on the highway. I took it into the dealership thinking it needed aligned. The alignment looked fine so they tried to balance the tires. One of the tires would not balance. They replaced it under warantee. The service manager said they have had a couple of MT/R go out of round. I had about 7,000 miles when I noticed it and just over 9,000 miles when I finally took it in.