Maxxis Trailer Tires-why so much better?

Let me also throw this out there, I won't be traveling across country. I think our longest camping trip is about 250 miles one way, so 500 round trip. I will also only put about 3000 miles a year or less on these tires. We use our camper about one weekend a month, so rarely will it sit in one spot for more than 5-6 weeks, but it will still be sitting a lot overall. If this makes a difference.