Scrubs and Vectors offer a little more steering which I liked with the 8mm. I run the bar code golds sometimes when the track is wet, but most of the time I run slicks. The bar codes felt pretty good most of the time with the standard chassis. It's to hard to tell whats going to work best for you at your track get your hands on as many sets as you can. I change tires more than any other setting on my car from week to week.