No event-specific fuel percentage or tank-capacity restriction was confirmed for this round.

IMSA Endurance Series
GridUnion organizes your team. Official race registration in iRacing is separate.
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Rules & shared race intelligence Fuel, tyres, weather and research sources
Shared race intelligence
iRacing IMSA Endurance Series, 160-minute team race at Circuit des 24 Heures du Mans on October 31, 2026. Confirmed: 1–16 drivers, declared-driver Fair Share, dry-event forecast, rolling start, local cautions, and 160-minute duration. Fuel, tyre allocation, mandatory stops, stint limits, fast repairs, and qualifying carry-over are not confirmed.
Drive Fair Share and Declare Drivers are enabled. Declared drivers must drive; each must complete at least 25% of an equal share of the team's completed laps, rounded up. Failure results in post-race disqualification. minimum laps per declared driver = ceil(ceil(total team laps / declared drivers) × 0.25)
All-dry event; rain chance listed as none. Dynamic weather was not explicitly confirmed. 72°F / 22°C; rain chance none; all dry events.
No tyre-set allocation or qualifying carry-over rule was confirmed for this event. Not confirmed.
Incident limit: 25. Penalty at 25 incidents and every 10 incidents thereafter. No incident disqualification is listed. Rolling start and local enforced cautions are listed.
Not yet confirmed
- The official schedule PDF was not machine-readable in the available source, so current-round fuel percentages, tyre allocation, mandatory stops, maximum stint duration, fast repairs, and qualifying carry-over could not be independently verified.
- The incident-limit values come from the indexed 2026 IMSA Endurance schedule listing and should be checked against the in-session Rules tab before racing.
- The official sporting code defines Fair Share in laps, not minutes; a minimum driving time cannot be calculated without confirmed lap count and pace.
- iRacing's IMSA pit-stop ruleset supports simultaneous fuel and tyre service, but activation for this specific 2026 Season 4 round was not separately confirmed.
Setup, braking points, strategy — one topic at a time.
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