Reviving this thread. I've been running my 2014 GSAW with Anakee 3's and been pretty happy with their overall performance but they are a single compound and even though I ride very aggressively and a high percentage of twisty canyons, I'm still getting a flat spot on the rear at 4-5000 miles. Thinking I might try the PR4 Trails or GT's for the only 10% off road I do on graded dirt and gravel. The only reason I'm thinking of the GT's is because of the harder (and more narrow) center compound on the rear. My question...I've run dual compounds on other sport touring bikes and they can develop an edge between the hard center and softer sides that hurts handling. Is this an issue with the PR4's?