Calling around today for 380/90 r46 tires and first alliance price came in over $2200/tire. Next place I called and $1500/tire. Wow, I found a gold mine, then started asking quesitons. The cheaper were rated for 11000#/ and the "sprayer rated" was more expensive and  14000# tire and 40 mph. When comparing applest to apples price was within $100 total. I talked to previous owner of sprayer and he said they always went with "sprayer tires" so felt like that was a good call. Lot of money, first guy said he could get the others and it would again be within $100 total but would not recommend them. Bottom line, make sure you are comparing apples to apples.