had about 1 puncture / month with standard marathons – always the rear tyre. it seemed that although i could ride through broken glass with no immediate effect, bits of glass would get stuck deep in the tread, and slowly work their way in – driven by my weight? (more weight over the rear). my puncture rate dropped a lot when i took 1 evening a week to picking bits of glass out of my tyres with tweezers.
(20k every day, in sheffield, where it’s potholes and broken glass ***king everywhere)
had none in over a year since i changed the rear to a marathon plus.
if you never want to get a puncture, and can accept the weight*, it’s marathon plus for the win.
(*my 700×32 weighs more than 800g)
i’ve even stopped the tweezing…