I have had the
Maxxis M-8808, 10ply 15inch ST Tires on my trailer since 2015. They have made a round trip from Michigan to Florida twice and a round trip from Michigan to Texas once. Never a single problem and they very seldom need air. I run them at the max sidewall pressure of 80psi and they are wearing evenly with very little wear.
Excellent tire in my opinion. I have had Maxxis tires since about 2008 with never a problem. I think they are an excellent choice for those of us who have 15 inch wheels and could use a higher load tire.
Barney