Not sure if anyone has had their bike long enough to wear out a rear tire, but I was just curious as to what brand / model people are considering as replacement rubber? I agree with the philosophy of tires being the last place you want to cut costs, so the OEM Pirellis are most likely my first choice as a replacement when the time comes. Obviously a lot depends on the type / level of riding done on the bike, traction control, slipper settings, etc.. I would go through a rear (Pilot Road 4) every 3 months or 2000 miles with my 2001 S4. Of course that is flattening out the center of the tire not the edges! I think a lot of the wear came from engine braking so I would expect the 959 with all the electronic aids to yield a lower wear rate. Just something to ponder.