How it Works Official Rules FAQ Contact About Exchange Rates & Limits   When Selecting Drivers: Five Gallons of Gasoline = One Tire Limit: 320 Tires When Selecting Pit Crews: One Tire = Five Gallons of Gasoline Limit: 2,440 Gallons of Gasoline The racing team allotments of gasoline for the required eight drivers (2,440 gallons) and tires for the required eight pit crews (320 tires) represent the “exchange currency” that enable owners to formulate and, if desired, alter their racing strategy. By trading gallons of gasoline for tires or tires for gallons of gasoline, an owner may change the team’s lineup of the two main racing variables, drivers and pit crews, to improve his/her perceived competitive position. During any given race week, for instance, in order to obtain more high-ranking drivers than the established limit of 2,440 gallons of gasoline allows, an owner may simply exchange one tire for the equivalency of five gallons of gasoline or multiples thereof. Conversely, if an owner wishes to strengthen his/her lineup of pit crews, tires may be traded for gasoline at the reverse exchange rate of five to one. The value of drivers and pit crews will change from week to week depending upon their performance. If an owner strengthens his/her team’s lineup of drivers, it is at the expense of available allotment of tires for pit crews. The reverse also is true. The only restriction on exchanges between drivers and pit crews is that a minimum total of gallons of gasoline and tires needs to be maintained in order to select the required eight drivers and eight pit crews. Therefore, the least valued in either category continues to be offered for selection. Available drivers and pit crews appear on the computer screen in green and will switch to yellow when exchange limits are approaching the caution level. However, they will begin appearing in red if it becomes mathematically impossible to select the eight least valued resources in either category. Regardless of racing strategy, team owners may not carry over unused quantities of gasoline or tires into subsequent racing weeks. If allotments are not used during any racing week, they are lost.