Hard to tell with just a few rides on these. I am using them with TPU tubes, 170 lb rider at 30 PSI. No issues so far. Ride quality is good although it feels like I can go even lower with the pressure. Bought to go a bit wider (went from 40's that measured 36 to these (45) that measure 44). I was looking for some more stability in some looser conditions, especially sandy shoulders, and to give a bit more grip when cornering (old tires were basically slicks with no side grippers.
I use it mainly for pavement, hard pack and light gravel. I wish it was a little more puncture resistant.
I have used Panaracer SS tires on my gravel bike for a few years now. I have found the tires to be tough and long-lasting. In particular, on some routes I ride them on canal right-of-ways and ranch roads where the base gravel is a sharp basalt. I usually run them at 27 psi with 60 ml of Orange Seal. One real plus is I find them relatively easy to install and the tires seat easily before pressure reaches 70 psi or so (I use an old-as-the-hills Sears compressor, so air is not a problem). I have also used Panaracer SK tires, and find those to be great also, if you are looking for a center tread.
These are my fat and comfortable road tires that work with fenders on my gravel bike in winter. I will use them on the road during the summer if the ride will see little gravel or loose conditions. Would be fine on hard pack.
Only 100 miles in, but very impressed. High quality, fastest tire of this size I've had that still felt good in the wet. These replaced several seasons of Roubaix Pros, clearly faster.
Great tires for street riding and mid to light gravel. They set up really nice and are very supple. I recommend this tire.