Best 15" tires for race trailer

Time to replace the 225/75/15 load range D Goodyears…… they have been okay for many years but would like a better tire and going up to load range E.

Trailer weighs about 10500 lbs loaded.

Thinking about trying Maxxis load range E's after reading good reviews online.

I'm limited to 28" diameter so I probably have to stay with 225/75/15…….is there any other options for good quality 15" trailer tires?

Buy and use the highest load rating you can get Check to see if there is a higher rated comercial tire available around you
Is that a three axle trailer? If not maybe it should be The other option is to switch tires and rims to 16 inch to get better rated tires, I'm not usre about the hieghts on them though