Correct. The problem those of us with 4wd have is the front driveshaft. (the trade-off between caster and pinion to keep both angles good). With no front driveshaft, high caster should not be an issue. It will make the steering feel heavier, maybe affect the return-to-center, not sure if tire wear can be affected?

 

The caster by itself does not cause tire wear, but the caster angle can cause the toe to change. With a more positive caster angle, the wheels will toe in. An insufficient or excessive caster angle can cause toe wear, even with the toe set to specifications.

 

Sorry missed that. You should be able to
comfortably roll with higher caster.