They’ll fit, without needing the spacers. I have 285/65 on the stock wheel, slight rub at full lock in reverse. Progressively has been less rub as tires start to wear down. Ridge Grapplers. Hope it helps.
Running 285 65 20 ridge grapplers, slight rub full lock only on reverse. No where near severe, not enough to cut. They are definitely heavy though. Here’s some pics,