Tyre experience sought ” ContiGo or Bridgestone BT45 “

Tires experience wanted “ContiGo or Bridgestone BT45 ” I want to mount new tires with a Jungster, as the old ones are probably hardened by “non-use” in the course of the years and do not offer enough safety in the curves. On the XJ the last Metzler lasers front 3.25 H 19 and rear 120/90 18 are mounted. Alternatively, one can probably mount the Bridgestone BT 45 or the ContiGO. The Bridgestone should have a saw tooth pattern in the tires ahead after a certain time when sharp is driven. Alternatively, the ContiGo would be much better just because of its profile similar to the Sumo tires and the supposedly good grip. However, some voices say to the rear tire of the ContiGo, which is probably to wear faster than the BT 45. After 3 to 4000 km a new one would then be due. Which experience do you or good acquaintances with it? Personally, it would be no matter if the tire really after 4000Km , because the sumo tire holds just when 2500 to 3000 kM. Dear more grip and less than bad as the Michel.