Soiltac caused unimaginable tire wear. A new 1/8 Aka gridiron turned to a full slick in 3 tanks. Never driven on anything like it, very blacktop like. I don't know what the perfect base would be, I have heard it dosen't penetrate clay very well. We put it on a top soil/sand track and it did not soak in well, only to peel up in a few weeks Very expensive. Everybody would have hated the tire wear anyhow.