The Tire Bank screen is where you would enter and save/store the tire information for each tire/wheel combination for your car.  Your can have up to 99 tires for each car.  This tire information is used for your tire selection in the 'Track Setup' and 'Chassis Weight Setup' screens. The information in the tire bank can be changed, added or deleted. The tire circumference in the tire bank is used to calculate both stagger and wedge when install (selected) in the 'Track Setup' and 'Chassis Weight Setup' screens.