I live in the Sinai desert so it is “Summer” here all year long. Lots of loose fist and head sized very, very sharp rocks in the gulleys, loosetop hardpack is around if you’e lucky, lost of sun-baked sand and then there’s the polished eroded rock. Apart from about twice a year, the only water I ever have to deal with is coastal/tidal and where there are palm trees their roots don’t show.
WTB Prowler MT 2.1 on the front works amazingly well, but loads of rolling resistance in on the hard stuff. The rocks are really, really harsh on the soft rubber side knobs. I also ran an old Hutchison Scorpion AirLight on the rear which did admirably here despite some of the terrible reviews they get.
I have recently switched to Maxxis Aspen 2.25 (f) and 2.10 (r) eXC (120 TPI). I run tubeless (Joe’s Sealant) on ZTR Olympic rims at about 28psi. They go on a treat and don’t lose air from the outset.
These are so fast it is untrue and as yet have not managed to make them fail me where grip is concerned. I was a bit concerned when I first fitted them because the tread looks so sparse and low profile. They seem pretty tough, but as with all tyres here, time will tell; the rocks are ridiculously sharp here.
I did start out on Continental Twister Supersonics 1.90, but they lasted about 2 weeks here.