Ok, now I'm having doubts about the M5s after this weekend. The first M5 I ran developed a bulge in the center tread. I had been debating whether or not it had enough life for a ride down to Shady Valley, TN, and decided to pull it and put a new M5 on. That's when I noticed the bulge. I was happy to have replaced that tire, even though it appeared to have plenty of life in it.
We went to Ravenswood, WV, this past weekend for my girlfriend's 20th high school reunion. Took 50 from Winchester, VA, to Parkersburg, WV, and hooked south. Had a great ride and a great time socializing (getting drunk and loud), and we left Ravenswood on Sunday morning. The tire looked good. No wear bars, plenty of tread in my estimation, and pressure was good.
We headed out on 33E and were just getting into Glenville (~75 miles after we left Ravenswood) and were halfway through a right-hander running about 60 when I heard a loud pop. I pulled into the first driveway I could find and found a dime-sized hole in the center tread. I was starting to see cords along the center strip, and the wear bars still weren't showing. I plugged the tire, rode to Glenville, and had a long, strange Fourth of July involving lots of effort to get my bike home.
Anyway, I have enjoyed my time with Metzeler. I have no issues with the ME880s on my cruiser, but these Sportecs are leaving me with that sour feeling in my gut. They handle great in pretty much any condition, but the wear reaches turbo mode without really showing any hint that you're about to hit cords.
The first tire with the bulge I chalked up to the luck of the draw. But the blowout I had on Sunday has me reevaluating my affection for the Sportecs.
I'm not sure what I'm going to do. I have a new rear M5 coming that I ordered before we left this weekend so that's what I'm going to run on my Smokies trip later this month. I may try a Roadtec on the rear with the Sportec M5 up front after that, or I may give the BT-023/BT-016 combo a try.