Originally Posted by
invisiblehand
How many miles do you have on the tires Jur?
Given how Schwalbe advertises the Marathon Plus, you might consider writing them and complaining.
http://www.schwalbetires.com/marathon_plus
"
Punctures become obsolete with the MARATHON PLUS! The SmartGuard layer made from a flexible, special rubber offers particular resistance to shards of glass and flints. Even a thumbtack cannot penetrate this protective layer. The SmartGuard belt does not increase rolling resistance. The MARATHON PLUS rolls as easily as a tire without protection."
Very little... like no more than 1000km, of which 500km was on the dirt roads of kangaroo Island so very little tread wear.
The puncture was just off to the side from the middle; I think what happened was that I picked up a coupla pieces of glass, then when taking a corner, forced one of those pieces through. When I tried to asses the thickness of the blue layer it seemed much thinner than the ads... possibly due to the tyre width which is only 1.35", so not much scope for building up a thick blue layer.