[Adam43]

Originally Posted by GT6

Boxing!

In GTE-Am the max is 45kg. Here is a summary of all the BoP and success ballast for the cars in 2023.

Weight
Weight (Kg)

-- Bulletin --	--- Track ---	FERRARI	ASTON MARTIN	PORSCHE	CORVETTE
1/3/2023	Sebring	1264	1262	1300	1289
6/4/2023	Portimao	1263	1245	1269	1265
19/4/2023	Spa	1263	1245	1269	1265
26/5/2023	Le Mans	1263	1245	1269	1265
		488 GTE EVO	VANTAGE AMR	911 RSR - 19	C8.R

Corrections after Sebring and then nothing since.

On top of that there are adjustments for specific entries depending on previous results:
Succes Ballast (kg)

-- Bulletin --	--- Track ---	#33	#77	#57	#83	#21	#85
1/3/2023	Sebring	0	0	0	0	0	0
6/4/2023	Portimao	30	20	10	0	0	0
19/4/2023	Spa	45	20	5	10	5	5
26/5/2023	Le Mans	0	0	0	0	0	0
		CORVETTE RACING	DEMPSEY-PROTON RACING	KESSEL RACING	RICHARD MILLE AF CORSE	AF CORSE	AF CORSE

This is limited to a maximum of 45kg

Corvette #33 has hit the max.

This part is irrelevant for Le Mans as all success ballast is removed.

Stints
MAXIMUM ONBOARD FUEL VOLUME (liter)

-- Bulletin --	--- Track ---	FERRARI	ASTON MARTIN	PORSCHE	CORVETTE
1/3/2023	Sebring	89	88	101	95
6/4/2023	Portimao	89	88	101	95
19/4/2023	Spa	89	89	101	95
26/5/2023	Le Mans	88	97	102	96
		488 GTE EVO	VANTAGE AMR	911 RSR - 19	C8.R

Aston been given a decent chunk more fuel for Le Mans.

The proxy for engine power

Pboost ratio* (RPM) / MAXIMUM RESTRICTOR DIAMETER (mm)

-- Bulletin --	--- Track ---	FERRARI	ASTON MARTIN	PORSCHE	CORVETTE
1/3/2023	Sebring	1.78 (5,500)	1.42 (6,000)	30.6 mm	41.3 mm
6/4/2023	Portimao	1.78 (5,500)	1.42 (6,000)	30.6 mm	41.3 mm
19/4/2023	Spa	1.78 (5,500)	1.44 (6,000)	30.6 mm	41.3 mm
26/5/2023	Le Mans	1.75 (5,500)	1.49 (6,000)	30.7 mm	41.3 mm
		488 GTE EVO	VANTAGE AMR	911 RSR - 19	C8.R

* Boost is set at different RPMs, this just shows the boost at the 5th highest RPM listed. It gives an idea of the overall change as it tends to move the same at all RPM, but it might not.

There is also Minimum Rear Wing Angle with respect to floor adjustments that can be made.