Trailer Tires ?

[abl1111]

(2) of my (4) old trailer tires are splitting as they sit the cold winter. They are ST205/75R14,
(4) ply. All different makes.

One of the newer tires is a D14 - it sits slightly higher than the others - it was replaced 12 years ago !

I do not trailer much - at all. Usually it's 1 mile to the ramp - the trailer will sit for (7) months and then 1 mile home again, where the boat will sit for the off season. I've done this for 12 years. The trailer is a mid 80's, Florida Rocket trailer - in NY. So, long distance usage is not an option. It totally meets my needs.

Note: to get the trailer in position along my house for winter storage, the tires do get torqued a bit and left that way.

What are good tires for this type of use ?