It's a 205/50-17. Since this is my first, I have nothing but a MC tire with which to compare. All you've heard about heavier steering pressure is true. As for the GY TripleTred its self, I am happy with its performance in the wet and on dirt roads but it does seem to have less braking grip than the PR4GT. When I do finally replace it in about 30,000 more miles, I'll likely look for something a bit more rounded. This tire looks a lot more rounded sitting on the rack than it does mounted on the wheel.
Best way I found to get in contact with Mr. Meese is on the k1600 forum
http://www.k1600forum.com and Mr. Azevado on the LDRider list...