I returned Saturday from San Diego to Alaska to San Diego and the Mitas E-07 Dakar tires I decided on made the whole 11,034 mile trip. These tires worked great for me on my 2011 GS Adventure. A rode solo and had 90-100 pounds of gear plus my BMW panniers and Givi Trekker top box. In all, that was about 120-130 pounds in addition to my 210 lb. (with riding gear) carcass. The sizes are 150/70-17 rear and 110/80-19 front The tires worked well on twisty roads, in the rain, and on gravel roads. I rode the Dalton highway, the Denali highway, the road to McCarthy and some other short dirt/gravel excursions. My dirt riding experience in my entire life was less than 100 miles, but after a bit of thought and practice I was pretty confident on these tires when off road. After about 10k miles I was on a road in Oregon that had pretty deep gravel and it was a bit scary but I don' t know if it was the tire wear or just the deep gravel. I crossed quite a few of the steel grate bridges on the trip and they always scared the shit out of me, then add a cross wind. When new the rear tire had 12mm of tread and the front 6.5mm. After 11,034 miles the rear has 4mm of tread and the front a little more than 4mm. I have not tried the Heidenau K60 so I cannot compare them. The tires do howl at speed but I wear ear plugs and play music in my helmet speakers so who cares about howling. The front tire lost a few pounds of air every few days and had to be topped off, the rear was more consistent. I stopped reducing air pressure after Dan Armstrong, in Fairbanks, said it was not a good idea and not necessary. I was there because the guy I was with needed a new rear tire. I will not hesitate to put these tires on again for trips involving dirt/street riding.