Both tires look to have a cut on both sides of the tread also. So a single cut, IMHO, would require the tire to be pretty much flat to cause such.I don't have those tires but are you sure you just didn't run over something that could have put that cut in the tire as that looks like a cut not dry rot?
Finally found the manufacture date on the new tire: 0517Thanks for all the replies....appreciate it. The first picture is of the front tire that was on my 2012 Fury when I purchased the bike. The bike had 20,000 miles on it so I kinda thought the tire was probably the original tire which also explains the dry rot going on. The second picture is of the new tire that I just purchased and had installed in June 2020. It's really strange that both the old & new tires would develop a split in the same place.
I am still trying to find the manufacture date....not having too much luck finding it.
Usually 3 years is the cut-off date, based on research I did when I was looking at car tires. Last time I bought a set (but 3 get 1 free) 3 tires were dated the same, the fourth was dated 5 years PRIOR! (Took the 'questionable' tire back and got a fourth 'date matching' tire) SO BE CAREFUL!Finally found the manufacture date on the new tire: 0517