2cvandy, I misread the tyre size and incorrectly assumed the 110/90 19 was a mistype as that size tyre is not listed as being a suitable figment for any modern enfield as far as I'm aware, whereas the 100/90 19 is , as a rear size. I appreciate the post has moved on since my first reply.
On a side note an Avon tyre that's well balanced and kept at the correct pressure for its load can cover over 26,000 miles up at the front of a modern Enfield with still a little more to give