hmm. Me changed from the 185/70 A-Drives to 195/70 XM1+. Yoko lasted for 30K kms. The major difference I can see is the XM1+ are dead silent. Not a bit of noise from them. Downside is the A-drives were more grippy compared to the XM1+. In office MLCP, the A-drives never squealed. But the XM1+ squeals when taking high speed turns.