The Steadiness of Efficiency (BoP) for the 2026 Sebring 12 Hours has been launched, revealing a transparent drawback for Porsche following its third consecutive victory on the Rolex 24 at Daytona. Steadiness of Efficiency adjusts energy and weight to maintain the completely different hypercar producers aggressive.
Whereas the numbers are discouraging for Porsche Penske Motorsport, they’re a logical consequence of the #7 Porsche 963’s hat-trick at Daytona.
General, the Porsche LMDh challenger has been assigned an identical power-to-weight ratio for Sebring because it had in 2025; nevertheless, its American opponents have obtained a considerably extra favorable BoP than they did for final 12 months’s race, with BMW additionally receiving a worse BoP than in earlier years.
#7 Porsche Penske Motorsport Porsche 963: Felipe Nasr, Julien Andlauer, Laurin Heinrich
Picture by: Michael L. Levitt / Lumen through Getty Pictures
Evaluation within the essential vary under 230 kph
That is the power-to-weight ratio for all GTP automobiles within the essential span till 230 kph (ranked greatest to worst):
- Aston Martin Valkyrie 1.981 kg/kW
- Cadillac V-Sequence.R 2.045
- Acura ARX-06 2.060
- BMW M Hybrid V8 2.063
- Porsche 963 2.077
The Aston Martin Valkyrie is the clear winner right here, returning to a stage corresponding to its FIA WEC BoP. The Valkyrie seems to require this BoP help to stay aggressive with the opposite Hypercars in each sequence.
The remaining subject is carefully matched, with the Porsche 963 now rated because the least favorable GTP machine. That is primarily because of a 20-kilogram weight improve, bringing the 963 to 1,055 kilograms.
Provided that the 963 has traditionally carried out greatest on smoother surfaces, this can be a “double hit” for Porsche, regardless of latest updates geared toward enhancing efficiency on bumpy tracks.
Compared to the 2026 Rolex 24, Porsche loses essentially the most floor:
- Aston Martin Valkyrie -0.024 kg/kW
- Acura ARX-06 +0.058
- Cadillac V-Sequence.R +0.058
- BMW M Hybrid V8 +0.059
- Porsche 963 +0.078
Once more, the Aston Martin Valkyrie receives essentially the most vital enhance in comparison with Daytona. Whereas Acura, Cadillac, and BMW obtain related BoP changes, Porsche is hit hardest by the load penalty.
All GTP automobiles, excluding the Aston Martin, which maintains its 520 kW most, can have roughly ten kilowatts much less most energy under 230 kph in comparison with the Rolex 24.
As a result of bumpy nature of Sebring Worldwide Raceway, producers could must additional lower most energy to forestall energy spikes when the rear wheels come off the bottom.
In comparison with earlier years at Sebring, there are vital shifts. Observe that since all LMDh automobiles have been up to date for 2026, direct numerical comparisons must be taken with a grain of salt.
Adjustments in power-to-weight ratio to the 2025 Sebring 12 Hours:
- Aston Martin Valkyrie -0.078 kg/kW
- Cadillac V-Sequence.R -0.060
- Acura ARX-06 -0.058
- Porsche 963 -0.002
- BMW M Hybrid V8 +0.051
#25 BMW M Workforce WRT BMW M Hybrid V8: Philipp Eng, Marco Wittmann, Kevin Magnussen, Raffaele Marciello
Picture by: Brandon Badraoui / Lumen through Getty Pictures
As the info reveals, the largest loser relative to 2025 just isn’t Porsche, however BMW. The M Hybrid V8 has been handed its least favorable BoP for Sebring since its 2023 debut. It seems WRT’s surprisingly robust exhibiting on the Rolex 24, after lagging in observe, prompted warning from the technical committee.
All different automobiles obtained a greater BoP than in 2025. Unsurprisingly, the Aston Martin Valkyrie leads the charts, as its 2025 look was its IMSA debut and was ruled by a conservative BoP.
Acura and Cadillac see the biggest features, whereas Porsche stays largely at its 2025 stage. Traditionally, the BoP between these three now carefully resembles the 2024 version. The outlier stays the BMW, which faces a difficult weekend on the airfield’s bumps.
#23 Aston Martin Thor Workforce, Aston Martin Valkyrie, GTP: Ross Gunn, Roman De Angelis, Alex Riberas, Marco Sorensen
Picture by: Brandon Badraoui
Evaluation top-speed vary above 240 kph
With the Sebring Worldwide Raceway missing lengthy straights, the BoP above 240 kph is much less crucial than at Daytona or Highway America. The figures are:
- Aston Martin Valkyrie 1.981 kg/kW
- BMW M Hybrid V8 2.076
- Cadillac V-Sequence.R 2.085
- Porsche 963 2.089
- Acura ARX-06 2.099
The high-drag Aston Martin receives much more help within the top-speed vary than under 230 kph, having fun with a bonus of practically 0.1 kg/kW above 240 kph. The opposite GTP automobiles are separated by simply 0.023 kg/kW.
In comparison with the Rolex 24, the place the vary above 240 kph was way more crucial than it’s at Sebring, all producers besides Aston Martin have been slowed down:
- Aston Martin Valkyrie +-0.000 kg/kW
- Cadillac V-Sequence.R +0.039
- BMW M Hybrid V8 +0.041
- Acura ARX-06 +0.041
- Porsche 963 +0.061
Porsche is hit barely more durable than the opposite three producers in comparison with Daytona, as Acura, BMW, and Cadillac all obtain an adjustment of roughly 0.04 kg/kW.
And at last, the comparability to the 2025 version of the Sebring 12 Hours:
- Aston Martin Valkyrie -0.074 kg/kW
- Porsche 963 +0.019
- Acura ARX-06 +0.038
- Cadillac V-Sequence.R +0.038
- BMW M Hybrid V8 +0.044
Once more, the Aston Martin—which sat proper in the course of the charts above 240 kph in 2025—receives a major break in comparison with its debut race final 12 months.
Regardless of taking the toughest hit relative to Daytona, Porsche’s BoP above 240 kph just isn’t as extreme when in comparison with 2025, receiving solely about half the penalty handed to Acura, Cadillac, and BMW.
#60 Acura Meyer Shank Racing w/Curb Agajanian Acura ARX-06: Tom Blomqvist, Colin Braun, Scott Dixon, AJ Allmendinger
Picture by: Brandon Badraoui / Lumen through Getty Pictures
What to know earlier than the Sebring 12 Hours
The 2026 Sebring 12 Hours is shaping as much as be a tough outing for the 2 German producers, whereas probably benefiting Acura and Cadillac. Whereas the BoP adjustment for Porsche was largely anticipated following its Rolex 24 hat-trick, BMW’s slowdown comes as a shock.
It stays to be seen how a lot Aston Martin can capitalize on its BoP break on the first circuit the place the workforce has prior racing knowledge.
Having carried out strongly on the Petit Le Mans season finale final 12 months, Sebring may ship the primary victory for the V12-powered challenger after its tough run at Daytona.
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