ESR 2021 GT4 World Tour ESR will be presenting the ACC GT4 World Tour starting in April. Join us for GT4 Racing on some of the world’s most iconic tracks. The ESR GT4 Sprint World Tour is a new series that will be hosted by ESR on Monday‚Äôs, beginning in April. The series will feature eleven GT4 cars available in Assetto Corsa Competizione. The series will consist of six events, running bi-weekly, beginning on April 5th. Each round will include…