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D.6.2.1 All tire changes after a vehicle has received the Green flag to start the Endurance Event must take place in the Driver Change Area.
D.6.2.2 If the Operating Condition changes to Wet during Endurance, the track will be Red Flagged or vehicles will be Black Flagged and brought into the Driver Change Area
D.6.2.3 The allowed tire changes and associated conditions are given in the following tables.
Existing Operating Condition | Currently Running on: | Operating Condition Changed to: | ||
Dry | Damp | Wet | ||
Dry | Dry Tires | ok | A | B |
Damp | Dry Tires | ok | A | B |
Damp | Wet Tires | C | C | ok |
Wet | Wet Tires | C | C | ok |
Requirement | Allowed at Driver Change? | |
A | may change from Dry to Wet | Yes |
B | MUST change from Dry to Wet | Yes |
C | may change from Wet to Dry | NO |
D.6.2.4 Time allowed to change tires:
a. Change to Wet Tires - Any time in excess of 10 minutes without driver change, or 13 minutes with Driver Change, will be added to the team's total time for Endurance
b. Change to Dry Tires - The time used to change to Dry Tires will be added to the team’s
total time for Endurance
D.6.2.5 If the vehicle has a tire puncture,
a. The wheel and tire may be replaced with an identical wheel and tire
b. When the puncture is caused by track debris and not a result of component failure or the vehicle itself, the tire change time will not count towards the team’s total time.