I just had a set of Roadsmart II's installed on my GTL, last Wednesday 6/27/2012 and I am very pleased with the results. I had 7600 miles on the Metzeler, Z8's at that time of this change. The Z8's were, possibly, good for another 1000 miles but handling was non-existant by that time. The Z8's performance, for the duration, was less than I had expected from Metzeler. Traction limitations being the primary concern and reduced longevity, from wear, being the secondary concern. I decided that I needed to try a different brand of tire.
I chose the Dunlop Roadsmart II tire as a result of a review, which appeared in Rider Magazine. The purchase was not an easy task, as these tires are just being introduced into the USA, in sizes the are suitable for the BMW/K1600GT/GTL. Before going to the Americade rally in June, I called Dunlop customer service to ask if Dunlop would have a booth at that rally. I was told that Dunlop would be at Americade and that they would have a 120/70-ZR17 for the front and a 190/50-ZR17 for the rear. Obviously, the rear tire was the wrong size, so, I asked about the availability of the 190/55-ZR17. I was told to contact a Dunlop dealer to check for availabilty. I did but to no avail. No one had these tires for sale, to me.
Three weeks later, after many conversations with Dunlop customer service, I was told that the 190/55-ZR17 was shipped to 2 distributors, Tucker Rocky and Parts Unlimited. I contacted the Parts Unlimited distributorship and they confirmed that they had this tire and explained what I had to do in order to make a purchase. I contacted one of their dealers and ordered the tires. I got them a week later and had them installed just before I left on a trip to Vermont.
I, now, have a shade over 1500 miles on the new Roadsmart II tires. Most of those miles have beem on roads through the Berkshires in Massachusetts, the Green Mountains of Vermont and New Hampshire's White Mountains. While these roads are not comparible to the Dragon or Deals Gap, they still represent a reasonable challenge for many of us riders and, certainly, can be considered an adequate test surface to guage tire performance.
The initial impression, when the tires were first installed, was that the GTL felt lighter and more agile. I didn't try any agressive riding until I had, over, 200 miles on the tires. My plan was to progress slowly into a more challenging ride so that I could get a feel for the tire's capability. The K16 wouldn't wait! I found myself riding this motorcycle as I hadn't ridden in many years. These Roadsmart 2 tires make this BMW flickable and stickable. Smooth transitions and impressive traction gave me confidence to ride the Beemer as, I'm sure, the BMW engineers envisioned it to be ridden. Noise levels are higher than those I experienced, at initial mileage, with the Z8's. I'll try to keep you posted on tire quality and wear duration as things progress.
The bottom line is that the Dunlop Roadsmart 2 tires are such an improvement that the K100GTL seems to be a different motorcycle than the one I purchased in January. It's lots more fun to ride.
Last edited by lawretj; 07-07-2012 at 01:26 PM.