
Once you can get to the main menu with your second profile, go to Career, Car, Upgrade, and press the Setup Manager button. When you are selecting your initial vehicle, pick the same car as you chose above on your main profile. Note that if you have never played Forza 5 on the second profile before, you will need to progress slightly in the campaign before it will let you exit to the main menu. When you are signed in to your second profile you will need to load up Forza 5. If you haven't created one on your Xbox One previously, you need an email address to do so, and Microsoft will give you one at no charge if you go to. At this point, your tuning setup is able to be downloaded and used by others in the community. Choose two keywords (mandatory, but which ones don't matter) and then any description you wish, then choose "Share". Press to save the file and the Share menu will appear. The icon at the bottom of the screen should default to an arrow pointing down towards what is presumably a disc drive, so press and enter a unique file name.

Press the Setup Manager button and choose "Save Setup".

Change the front tire pressure by tapping the once to either side and then press, choose "Yes" to apply the change. If you have previously changed the parts on this vehicle, go set everything back to defaults first. This will place you back at the Career menu, so choose Car and then Upgrade. To do this, go to the Career menu, choose Car, and get in the vehicle in question. On your main profile, you will need to create and share a tuning setup for one of the cars initially given at the start of the career.


This guide is written based on doing this solo with a second profile. This is easiest to do with a second profile on your Xbox One, but you can also do it with a group of 15-20 other people where you each commit to a 2-3 week boosting process consuming about 20 minutes a day. For best efficiency, do this at the same time you work on the three design achievements.
