Just so you know I would prolly be hard pressed to cough up any help to the specific location of a bonus, but hey your a better man than me so I thought you might help a brother out.
Do you have a GS tire recommendation for the Butte Lite? I totally trust the Tourance and the TKC after hard part road testing ( I loved keeping up with an R6 in the 94/394 chicane two up on the knobbies last week) but now I am looking for an LD tire. The Metzler Marathon was recommended but I'm not finding a match for the 1150.
I run the Tourance on my GS. It just works. Good milage and good wet weather traction. I can snake out about 10K on the rear. Well worse case was 6k but that was a special event. I would think you should be able to last the BL on a single set.
I really wanted to say what Marty said, but I haven't used those tires in over four years now. FWIW, on my GSPD the Tourance were good for 8-9K miles; if you wear a set out on Butt Lite, you win the car! Or something.