I just saw this post and I couldn't believe it. I tried two sets of Macadam's and had awful results. In fact, they were easily the worst tires I've used since the old Good Year tires of the mid 70s. After the first set had to come off at about 2,000 miles I called their tech support and was told to order a special set for the heavier bikes, like my ZX-11. The second pair did do a little better, about 2,500 miles. The front tire, in particular, cupped like no other tire I've ever seen. I own a bike shop, so I've seen and mounted a truck load of tires, of all brands. I am currently running 010s with much better results. My bike has over 170 hp and it tends to eat tires even without running all that hard.
The Macadams were actually rather funny. I could hear the front tire on the highway with just a slight lean to the right or left. They were almost a saw tooth in appearance. When I rolled the bikes in the driveway going backward every thing would shake as if it was rolling over a bridge gratting. I don't understand the contrast with others here. With over 120,000 miles, I tried several different brands and none of them acted anything like this. Go figure.