John
In general my opinions on what is seen in the pictures matches Barry's. I am sure that Barry and I would have a great time trying to agree 100% of the time even if we had the tires in our hands.
My definition would be that a crack initiates within the tire rubber and there are no signs of initiation from an external object. A cut is started by some external cause. Either way if the cut or crack grown such that you can see or feel the belts with a flat blade screwdriver it is deep enough to cause other problems.
The tread design is not in my opinion what I would consider desirable for trailer application. I see little reason for all the traction lugs in the shoulder rib. If I were shopping for new trailer tires I would try and find something with more continuous shoulder ribs.
I know these are not your size but they show what I am talking about.
Trailer tireDrive (traction) designTrailer tire
Trailer tireOn
THIS page click position to see the difference
A reader suggested
THIS tire line
