Have also heard for yrs. riders dissatisfaction with the Pilot Active longevity. Couple years back I ran a K36 rear on my 79 R100T. Preformed pretty well but squared off and was done @ 5000 mi. Metric Spitfire S11's got me 11,000! Just mounted a set of D404s for this run. So far as sticky & smooth as the Spit's.

I can't seem to find tires that hold up on my 1979 R100.
A ) What 4.00-18 rear tire do you like for long life ?

B ) Do the metric tires get better life over the "vintage" tire sizes ?

Any insights highly appreciated.