Every car has event-specific BoP adjustments to fuel, weight, or power, but no vehicle-specific tank-capacity or maximum-fuel values are published.

Britcar 24 Presented by Cosworth
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Official iRacing Britcar 24 Presented by Cosworth at Silverstone GP: 24-hour GT3/GT4 team event with dynamic weather, 2–16 drivers, fair share, and a 250-incident team disqualification limit.
Fair share is enabled. All declared drivers must meet a lap threshold relative to the team's total laps. Exact threshold/formula is not published in the official event information.
Dynamic weather is enabled. No event-specific weather forecast or weather progression is published.
No event-specific tyre allocation is published. Unconfirmed.
Incident limit: 250. Stop-and-go penalties begin at 100 incidents/100X per team. Additional stop-and-go penalties apply every 20 incidents/20X. Disqualification occurs at 250 incidents/250X per team.
Not yet confirmed
- The official event page does not publish exact fuel/tank limits or vehicle-by-vehicle BoP values.
- The exact Fair Share lap threshold/formula is not published.
- No tyre-set allocation, individual tyre limit, qualifying-set rule, or carry-over rule is published.
- Mandatory pit-stop requirements, maximum stint duration, and fast-repair availability are not published.
- No event-specific weather forecast or rain probability is published.
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