On Tuesday, October 24, 2017 at 3:50:31 PM UTC-7, wrote:
I picked up a piece of glass today and got a flat on my third ride on this tire. I didn't get any flats on the Pro4 Endurance though some people say that they cut easily.

The Pro4 Endurance tire rolled really easily - something that the Power Endurance doesn't seem to do. Though that could simply be personal opinion.

I'm selling a set of wheels and they have Specialized Armadillos on them. They did not have more than possibly 500 miles on them and showed a lot of wear. While looking at them one of them had a real long cut but still no flat. These are VERY expensive tires.

But the flat I got today I'm sure I would not have gotten on a Continental Gatorskin.

So it appears that Continental is still the uncontested king of flat-proof tires.

That's disappointing to hear. I don't think my Pro4 Endurance are that tough, but they are certainly more flat-proof than Pro4 Service Course. The version II of the Pro4 Endurance supposedly had lower rolling resistance than version I of the Service Course. The Endurance was a pretty fast tire. You have to wonder why they fooled with it. I don't think Gatorskins or 4Seasons have changed in ten years. Conti has not seen a need to constantly fiddle with them, although like Joerg said, they might want to re-think the sidewalls.

-- Jay Beattie.