Tire tests 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, undulating, 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 a 600, but stepping up to an Aprilia RSV4R and Yamaha YZF-R1 served to show how much traction the S20s have and how they behave when that traction runs out. With the bikes’ TC systems turned off, 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.