Tires cracked
 

So I just noticed my front tires have some kind of strange cracks. I do not know what caused it or how it happened. Also want know if its safe to keep driving like that or if they will get worse in the future. Haven't done any "serious" offroading recently.
Have anyone had similar issues with Maxxis Bighorn?

https://cimg0.ibsrv.net/gimg/www.che...5253ec1ceb.jpg
https://cimg6.ibsrv.net/gimg/www.che...dfd7717b5d.jpg
https://cimg2.ibsrv.net/gimg/www.che...cae0668c27.jpg

My first thought is wheel well cuts. Could be cracks though.

or spun the tire on a sharp edge

I agree spun on something or wheel well cut either way I would not drive on road with them trails may be okay but on road looking for trouble could blow out at any time!

Are those Maxxis Bighorns?

Yes they are

I cannot tell from the picture if that is a cut however I had maxxis bighorns on my old pickup they dry cracked and split worse than anything I have ever seen in a matter of a few years . What is the date code on them?

I don't where to find the date code.

https://cimg1.ibsrv.net/gimg/www.che...f4e2a65fa5.jpg
https://cimg3.ibsrv.net/gimg/www.che...a1cb7e2d58.jpg
https://cimg6.ibsrv.net/gimg/www.che...d4427f5d78.jpg
https://cimg8.ibsrv.net/gimg/www.che...bf47943cef.jpg
https://cimg9.ibsrv.net/gimg/www.che...6481fc6760.jpg

On the sidewall do a search it will quickly show you . It appears to be a cut thought because I think I see curled pieces of rubber at the edge of the cut .

You usually will see a 4 digit number on the sidewall such as 4517, indicating the 45th week of the year 2017. That's a cut, sun checking or dry rot wouldn't be that straight. I wouldn't use that on the road, maybe just get a cheap steel wheel and save it for a spare if you pop a tire on the trail.

https://cimg6.ibsrv.net/gimg/www.che...27387c7da0.jpg
Well this is all I found.

I had to buy 4 new tires a few months back, because the tire shop wouldn't fix a flat on my old dried out and cracked tires. They said the tires were twelve years old, made in 2006.

I think that they were wrong about that, because although we've only had the jeep about four years, I'm pretty sure the tires were more like 22 years old!

It does seem like many years ago tires didn't age and crack so much, and I know "they" weren't always preaching about how tires had to be replaced just because they were X-many years old. But probably tires just wore out faster so they usually never got to the old and cracked stage.

It does seems like the old 7.00-15 and 7.50-16 bias ply tires weren't as susceptible to rock damage as the tires we have now, even though we lived way up on gravel roads in the Rocky Mountains.

Although a couple people early on mentioned wheel well cuts, nothing was ever asked directly...

OP, are your fenders cut for clearance?

Well fenders are cut and don't seem to see how they could have gotten cut. If you see on the pics it shows some parts where they look cut but its not so deep or a straight line as on one of them that almost go all the way round the tire.