I bought that wheels two weeks ago, I only tested once in a sand climb, maybe 10 meters long, and 4 meters of height difference, and the wheels are like that:

Click image to enlarge

What tyre pressure? Sometimes too much pressure increases the risk of cuts when off-road. Also, maybe you just hit a very sharp rock?

I'll see if there are rocks, I think that there's only sand.

The tires are at 2,7 in front and 2,8 at rear (bar pressure)

thank's!!

For Sand driving i would normally drop to 16-18 PSI, which is about 1.103 - 1.24 bar, that said i have noticed the odd nick in the tread as well, that is on Goodyear Wranglers HP, but nothing to worry about

Yesterday the vehicle when we were off roading was subject to a lot of rocks and loose stone, not an issue. Another Pommie Bar Steward down under

MY20 Defender 110 SE P400 Eiger/Ebony
MY10 3.0 RRS TDv6 Fuji/Ebony/Anigre

I run my Def90 permanently on BFG MTRs and after a weekend offroading on gravel and flinty roads and in very muddy conditions with flinty stones in the mud they always end up with cuts like that. I ran it for a while on very aggressive Grizzly Claw tyres and even had several tread blocks and the side blocks cut off them in the same conditions - was annoying because if that happens the tyres are rendered illegal/ dangerous and I ended up replacing them with the BFG's. I was even able to sell the Grizzlies to a guy who trailered his 90 to offroad venues so missing tread blocks were not a problem for him! 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

@Llubi: Maybe it’s not compatible with your car that’s why the tire is not bearing the weight and showing these massive cracks on the surface.

Can I ask if they were new when you bought them? To me they look like they may be used tyres? If so then the higher pressures could have highlighted previous damage if the previous owner had been running them low for sand?

James