It all depends on the tire manufacturer. If you have an 8" wide rim, it may be curved at the top and the center will wear out 1st. A 9" wide rim would be better. As is you'll only be 1" wider per side with a 10" wide tire. The type of tire has allot to do with how flat or curved it will end up. Like Holeshots, they tend to lay flat......
If your at 8x8 be careful with your selection of an 11".......
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country