Which R-comps for Auto-X?

[Loren]

Very important that you understand that the grippier a rubber compound is, the quicker it ages. You're fresh Hoosiers, even if you only autox infrequently and they have half tread left, will be nearly useless in a year. Unless you keep the tires bagged and stored in a cool dark place, they will harden to the point that they're no better than an all-season street tire.

For "casual" use, I'd recommend the R888. They won't have the Hoosier grip, but they'll last a lot longer and be more consistent for a longer period, even in the "occasional use" environment.