I have 4, 8.25x15 tyres on 10 stud rims
1 mich with 10 mill tread 18 ply
1 fulda with 11 mill tread
plus 2 more think they are goodyear with 5 to 7 mill that are recut
I also have some 11x 22.5
2 have 17 mill tread
5 have 10 or 12 mill on them all on rims