With these style of chains you need to be buying them from a dealer who will stand behind their fit.Tractortirechains.com
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part #ST14928-08
How do these look to you folks with experience? Under $700 for the pair. They are made in China.
With a brand new M7040 with 16.9 x 28 R4 tires I thought chain fit would be simple. Trygg advertised their product as not needing any fitting to work.
When I installed them, the diamond pattern you see in your posted photo overlapped. i.e. the chains were too long.
In the end it turned out that the tires on the new tractor were 3" smaller in diameter than the Tire and Rim association spec. 3" in diameter meant 9" too long in length.
Kubota took no responsibility.
Fortunately for me TRYGG stepped up, had me ship the chains to one of their distributors in Canada who rebuilt them to fit the dimensions of the tires I had.
A good price from China on a set of chains which do not fit properly will mean decades of frustration for you.
Dave