Forza Motorsport 7 might be one of the biggest file sizes to ever hit the Xbox One. Make sure you have enough room on your hard drive to install the game.
Turn 10 announced that the blu-ray disc has 45GB that you need to install. However, a mega huge 50GB day one update will be available at launch that contains even more content from the game. If you do not download the update, you are missing out on other races that you can do.
Overall, you are looking at a file size of 95GB on the first day! On top of that, Turn 10 Studios is also releasing another huge update on November 7th to add the 4K assets for the Xbox One X console.
The PC version is likely going to have the same file size. If you do plan on buying Forza Motorsport 7, delete any other games you don’t play very often to make room.