The difference between the 2025 and 2026 Porsche are laid bare, as is the difference between JDC and Penske. For the first time these cars have different BoP.

• The 2026 Penske Porsche has more high speed power, but lower <190km/h power than the 2025 JDC Porsche – giving a strong hint to the changes when also considered with…
• …the higher weight for Penske. Which, in part, is influenced by the abilities of Penske and JDC.
• For most others, it could be considered a relatively softly softly approach. The rest have smaller tweaks.
• There is a decent chance of an overshoot (1,100kg for Penske!), especially when adjustments are outside the normal changes.
• Consideration also needs to be given to the nature of the next circuit, Long Beach, and to the last two tracks too. The most obvious is the change to the high speed power kick-in speed. Consideration to how the performance of each car maybe affected maybe influencing the changes.
• Aston Martin is still driving everyone else’s position.
• Correlation with previous race closer to 10 lap average than higher lap averages.

Daytona BoP reset – Sebring BoP Update

Power to Weight

Small tweaks apart from Penske! This is a big change for them. However JDC also loses out a little compared to the Sebring position.

It is still appropriate to show all the way back – if only to highlight the extreme.

With all these changes, unsurprisingly, JDC and Porsche do vary with stint energy too.

Weight

Quick change the scale!

Power

Again. Nothing major apart from Porsche!

High Speed Power

A slight bit of respite for Penske here. The transition speed has dropped 40km/h. This was something that was introduced last year at Laguna Seca, and used again at Detroit, but it is the first time it has been used for Long Beach.

Replenishment Rate

A full 100% energy stop is still 40 seconds.

Both the Max Stint Energy and the Replenishment Rate for Aston Martin are noted to have not changed between Sebring and Long Beach in the bulletin, but there are a slight different.

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So, how does this relate to Daytona?

Looking at the performance from Sebring, the changes are most highly correlated with the 10 lap average. That is different to Sebring BoP, which was better correlated to the longer averages from Daytona. Is that because they care more about short stint pace, or just a coincidence?

The correlation isn’t as good as for Daytona to Sebring. Potentially this simple correlation analysis as been skewed by tracks and high/low speed transition adjustments, or maybe just the extreme nature of the Penske changes.

Note the scale is much narrower than last time, mainly due to the lower relative movement of Aston Martin. However, it and Porsche remain the bigger changes)

At the risk of reading too much into this, the further above the line you are the better you have done.

We move on to our third race and it is yet another style of track, so more tweaking should be expected even if it is hitting the mark pretty well.

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Main BoP Categories for Reference

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