PR2 has weird wear characteristics, upgrade to PR3, PR4.
That is an odd statement. I have used two rear and one front PR2, and I really like the handling. Like all tires with a similar profile, they do "fall in" a bit when worn to a flatter profile, but so have all tires I've tried.
I will likely move to the PR3 or PR4 but I still have a good PR2 front tire and I simply want to match front and rear.