Your profile and garage are ways you can participate in the offroad community. A picture of your rig may be helpful to others who read your trail reviews!
Your profile and garage can be updated within the app via the Settings tab.
From there, you can tap any box under the About Me section to change the input.
To edit your garage, simply scroll down and tap My Garage. From there, you can edit any of your current rigs or add a new one.