Was a Great fan of the original GT's, ran three sets of them on my Z's, but, wanted to try something different. Since BMW & KTM chose the Metzeler M7rr for the S1000rr & Super Duke, I put Z8's on the work horse & M7rr's on the show pony. Loved the change so much, I put Z8's on the V11. With the soft rounded contour as opposed to the high crown of the GT's, transitioning right-left-right is so much smoother. Don't get me wrong, the GT's are an incredible tire....my MultiStrada customers won't use anything else. Just take a look at the Metzeler's. Similar profile to the Road 5's, but far better price point. Z8's lasting longer than the M7rr's, but that is to be expected.....IMHO...