DAVIES FASTEST IN PIRELLI TYRE TESTImproved SC compound for ultimate performance on track. New Rear profile in 190/55R17 for an improved handling. The Pirelli Daytona tire test of Monday-Tuesday, December 3-4, proved to be Pirelli's most successful ever with Pirelli riders setting the fastest lap times in all three AMA Pro Racing classes that Pirelli develops tires for: Superstock, Supersport and Formula Xtreme: fastest, fastest, and fastest.