Load range G in 11R-22.5 size has weigh limits of 6175 lbs single and 5840 lbs dual. I don't have an 11R-22.5 load range J in my chart, only metric tires in load range J that I can find. The question is how much do your axles weigh? With the 11R-22.5G tires you are good up to 12,350 on the front axle or a tag axle, and 23,360 on the drive axle at 105 PSI, which is the highest PSI for that size tire in my chart. There is a load range H in that size that goes up a little higher.
Brian