I got around 8000km (5000 miles) back in the 80's with Metzeler ME99 H tire which was good then. 836cc mostly high speed touring, city relatively aggressive.
Friends complained about 3000 miles (5000km) only with the sport version of same tire, probably V speed class.
I should be very pleased to get 5000 miles on a rear tire.
My K6 has around 100hp on the wheel. Earlier with 836cc, 81hp on Dyno, still short life.
The bike get really bad behaviour with flat rear tire, snake moves, rear wobble in corners.