When I got my 2012 SA model, the OEM tires were Metzeler Roadtec Z8 Interact which were single compound, but used "Interact Multi-Zone Tension" technology to provide better life in the centre and better grip on the sides by varying belt tension. When that set was worn out, I replaced again with Z8 which by then had transitioned to dual compound (still with "Interact" technology). I have since worn out that set and just put a fresh par of Z8s on last week. I have never had a negative experience with these tires. Never felt like I was losing grip dry or wet, and I'd say I got good life out of them. Probably got 3 years out of the stock rear and 4 or 5 years out of the stock front (if memory serves, not always a guarantee). The last set wore out prematurely because I got lazy on my pre-ride checklist and ran around with low pressure for far too long. Definitely a good street/touring type tire in my opinion.