Jimmie Johnson joins Leigh Diffey and Townsend Bell to preview the Twelve Hours of Sebring, as JJ mentions practice issues he encountered while preparing and shares what makes him comfortable and uncomfortable in IMSA. #NBCSports #IMSA #JimmieJohnson » Subscribe to Motorsports on NBC: null » Get the latest motor sports news on NBC Sports: https://www.nbcsports.com/motors » Watch Live races on NBCSports.com: http://www.nbcsports.com/live NBC Sports – the home of motorsports – features unparalleled motorsports programming, fueled by the network’s new media rights agreements with INDYCAR and International Motorsports Association (IMSA), NBC Sports will have more than 1,500 hours of motor sports coverage spanning NASCAR, INDYCAR, IMSA, Mecum Auctions, Monster Energy AMA Supercross, the Lucas Oil Pro Motocross Championship, Monster Jam, and Powernation. Subscribe to our channel for the latest motors news and highlights! Visit NBC Sports: https://www.nbcsports.com/motors Follow Motorsports on NBC on Twitter: https://twitter.com/MotorsportsNBC Find NBC Sports on Facebook: https://www.facebook.com/NBCSports Follow NBC Sports on Twitter: https://twitter.com/nbcsports Follow NBC Sports on Instagram: https://www.instagram.com/nbcsports Subscribe to NBC Sports on YouTube: null https://nbcsports.com/motors/nascar Jimmie Johnson previews 69th IMSA Twelve Hours of Sebring | Motorsports on NBC null