Alan,interesting choice as most ( as I read ) go with Michelin or Pirelli. Please leave some feed back as to how they go as I don`t mind experimenting...looking for tyres in 12 months or so......
I did try the PR3s and bought them on a run out deal.
The front is still on after fitting in April last year and has just done 12,000km and almost down to the tread limit bars which is on par with what I usually get on the front. Had I paid full price for the tyre I wouldn't have got anything for the extra price.
The PR3 rear managed a mere 8500km and again on par with what I usually get. The current rear is a B/stone T30 EVO and it's done 7400km and I'm running this one with 45psi to see if it makes a difference but hard to tell at the moment.
If I was riding solo most of the time my tyre wear may not be so bad but riding two up and about 40 - 50 percent trailer usage it doesn't seem to be any gain from using a supposedly better tyre.
The best tyres I ever had on my 1100 were Dunlop D205s and nothing has ever come close to mileage I got out of those (F - 18000km and R 12000km).