I’d Definately recommend the FIA GT1 World CHampionship. Saw the Silverstone round in person, and watched the final in Argentina on Bloomberg (Thanks Keith for the heads up… who’d have thought, but they have a lot of motorsport on that channel)
And you definately can’t beat a bit of BTCC (and all the support rounds… guess ITV does still just about serve a purpose) on a non-F1 Sunday.
I’ve also wanted to watch the Japanese Super GT, but it’s incredibly hard to follow… Aside from Youtube clips, I can’t find decent race highlights or a stream anywhere.