[throttlemeister]

Actually the M5 doesn't have multiple compounds. Compound-wise, it's old-skool single compound. The tech is in the belts. They use 3 different belt tensions for the center, side and edge to provide similar characteristics as others do with multi compound threads.

The Rossi Corsa is a multicompound tire though.

I think it is pretty smart what Metzeler are doing, if I look at the wear patterns of the Rossi Corsa and the MPR3. These tires show that while the idea is great, wear of different compounds isn't always exactly ideal between the edges of the different compounds.