Tire introductions are some of the most exciting events we get to attend because the host provides a wide array of bikes to ride, and Bridgestone didn’t disappoint. I started the day on a Kawasaki ZX-6R, following former MotoGP racer Jeremy McWilliams until I got my bearings on the challenging 2.9-mile Portimao circuit. The S20s felt sure-footed after just one lap and were fully warmed up after two. Traction was sufficient to cope with full-throttle corner exits on the 600, but stepping up to an Aprilia RSV4 R and Yamaha YZF-R1 served to show how much traction the S20s have and how they behave when that traction runs out. A slight smearing sensation signals the beginning of a power slide, after which the rear tire spools up quickly but smoothly. Slides were progressive and easy to maintain, increase or end. Feel from the front tire wasn’t stellar, but traction proved to be excellent so faith followed. The S20s felt neutral while trail braking and didn’t mask or enhance any of the bikes’ inherent handling characteristics; the R1 felt smooth and stable and the RSV4 dove for the apex and shook its head at exit. Traction and feel at lean are noticeably better than the S20s’ predecessors. While the BT-016 Pros allowed you to ride at seven-tenths, the S20s let you turn it up a notch.