Michelin Road 5

Well, I think I'm stuck with Michelin for a while. I am out of phase by the need to replace a PR4GT punctured rear 3/4 way through the service life of the set. Now it is time for a front and I am thinking about mixing a PR5 front with a PR4GT rear. In the old bias ply tire days I mixed a rear Dunlop with a Metzler and that combination made that 83 GPz 750 handle much better. I'm not so sure this would be the case today with radial tires and on a much heavier quicker handing RT? I'm guessing I would be a test case since the PR5 is so new.