Now don't take this as gospel! I haven't been racing offroad for more than a couple months... But I know that at my local track (indoor clay) slicks are very popular! I believe ghosted refers to tires (such as barcodes) that are ground down to a slick, or almost slick, with almost no tread left. So you can still see there were pins there, but cant really feel them to the touch. It came from an originally treaded tire, not a purpose built slick, like offered by panther. Can anyone confirm this please?