How to watch the IMSA TireRack. com Battle on the Bricks at Indianapolis! 🟢: Sunday, September 21 | 11:40AM ET 📺: NBC (3:00PM ET) | Peacock 🌍: IMSA YouTube Live | IMSA .tv 📻: IMSA Radio #IMS #BattleOnTheBricks #WeatherTech #Michelin #TireRack #NBCsports