HyperCars (LMH/LMDh) tunes

[GT PRO-AM]

Hi everyone! In this thread I will propose tunes close (as far as possible) to the Hypercar regulations for the Gr. 1 cars available in the game. It will take some time because it's also about finding some sort of Balance of Performance between the only real LMH in the game (the Toyota GR010 of course) and all the others.

As of today, I'll make use of the official BoP, as published in the FIA Technical Bulletin before the Qatar 1.812 km, albeit with some limitations (for example, wanting to base the Isotta Fraschini Tipo 6 Competizione on the Audi R18 '16, I am unable to reach the 1085 kg imposed by the BoP, but only 1075 kg).

The aspect that I imagine it could be the most problematic will be the top speed, given that even at their minimum weight the LMP1 cars in GT7 with stock setup never reach credible speeds. With 100 kg or more of ballast it could only be worse! It should also be said that some cars (the aforementioned Audi R18 '16, but also the Toyota TS050) cannot even be equipped with low, medium or high rpm turbos, and others don't have hybrid systems.

I'm currently testing these cars:
Audi R18 '16 as Isotta Fraschini Tipo 6 LMH Competizione
SRT Tomahawk Gr. 1 (turbocharged) as Alpine A424
SRT Tomahawk Gr. 1 (naturally aspirated) as Cadillac V.Series-R
Peugeot 908 as Peugeot 9X8 but "Evo" (the modified version with rear wing that will debut at the Imola round)
Porsche 919 as Porsche 963 and Ferrari 499P (I know it's almost blasphemous, I pray that Enzo has mercy on me)
Toyota GR010 as BMW MHybrid and... well, as Toyota GR010 of course
Toyota TS030 (turbocharged) as Lamborghini SC63

Bonus tunes:
Audi R18 '11 as Glickenhaus SCG007 (I miss them!)
Toyota TS050 as Acura ARX-06

I will gladly accept advice of course.

 

[GT PRO-AM]

Some key points before we get started, in the next few days:

• The reference of the category, being the only real LMH present in the game, is obviously the Toyota GR010; so, I will first proceed by defining a tune for this car, and then I will try to find a valid compromise for the others. At the moment, my Toyota GR010 test car with the approved BoP for Qatar 1,812 km (1,089 kg x 510 kW) stands at over 867 PP.
• In compliance with the technical regulations of the FIA/ACO LMH class (which also includes the LMDh cars of course), all cars will have only one adjustable aerodynamic element, in the sense that, once the front aero have been set, only the rear aero will be adjustable from track to track.
• I was (and I am still) tempted to tune the Hyundai VGT Gr. 1 as the Peugeot 9X8 in its original version, the one without the rear wing, which we saw running up to Qatar 1,812 km. Let me know if it might be interesting.
• I'm not very good when it comes to suspension and differential settings (especially on the latter), so any advice on these two aspects will be really welcome. The tunes will serve to have balanced PP values and above all credible and close lap times between the various cars.
• As already mentioned, the biggest problem will probably be the top speed. The LMP1s (especially when their power units cannot be further upgraded: I'm thinking of the Audi R18 '16 and the Toyota TS050) are unable to obtain high top speeds compared to other cars, unless the downforce is significantly reduced, however compromising handling. Any advice on this will also be welcome.

 

[raziel363]

Someone did something similar on this old reddit thread. But there is no tunes, just how he organized the custom races.
Cant wait to see your tunes following the regulations!

 

[GT PRO-AM]

Update: among many tune sheets for the various cars, I had mistakenly indicated a PP value for the Toyota GR010 referring to a "power maxed" version (with around 960 hp), which is incorrect because in GT7 the overall power output shown is only that of the ICE. More precisely: if the FIA/ACO BoP grants a certain car a maximum power of 510 kW, as in the case of the Toyota GR010, this value refers only to the ICE. To this power must be added that of the electric unit, which by regulation cannot be greater than 200 kW (272 hp), so the total combined power of the Toyota, when the electric motor is also in use, is 710 kW. Post #2 has been corrected: currently my Toyota GR010 test car stands at over 867 PP.

Having said this, let's take a look at the current FIA/ACO BoP, used for the Qatar 1,812 km (the values converted between kW and hp and between kgs and lbs are converted upwards or downwards, according to the usual rules):

Car	ICE max power (kW)	ICE max power (hp)	Comb. power kW (hp)	Weight kgs (lbs)
Alpine A424	510	684	710 (952)	1070 (2359)
BMW MHybrid V8	506	679	706 (947)	1060 (2337)
Cadillac V.Series-R	499	669	699 (937)	1032 (2275)
Ferrari 499P	503	675	703 (943)	1075 (2370)
Isotta Fraschini LMH	514	689	714 (957)	1085 (2392)
Lamborghini SC63	502	673	702 (941)	1041 (2295)
Peugeot 9X8 Evo	520	697	720 (966)	1030 (2271)
Porsche 963	505	677	705 (945)	1048 (2310)
Toyota GR010	510	684	710 (952)	1089 (2401)

 

[GT PRO-AM]

Based on the BoP above, I gave myself some rules:

• the ballast, serving to respect the minimum weight imposed by the BoP, will always be in neutral position, i.e. on "0", so not to affect, for better or for worse, the weight balance of the various cars.
• as previously mentioned in another post, in compliance with the technical regulations of the LMH category, only one aerodynamic element will be left adjustable, while the other, once set, will be kept unchanged on all tracks. Similar to reality, the element that will be left adjustable will be the rear wing.
• for cars that DON'T have hybrid systems (for example the SRT Tomahawk Gr. 1), the maximum power of the ICE will be increased if possible, provided that this does not alter the intake system compared to the real counterpart: so, for example, the SRT Tomahawk used to replicate the Alpine A424 will have the turbocharger (since the real Alpine A424 also has a turbocharged ICE), while the SRT Tomahawk used to replicate the Cadillac V.Series-R will not have it.
• since the Peugeot 908 HDi Gr. 1, used to replicate the Peugeot 9X8, has a turbodiesel engine with a consistent torque, for now I don't think of applying an additional turbocharger (I think a mid range rpm one would be available), because would produce a further and probably exaggerated increase in torque.

It's worth noting that I've already attempted a very quick shakedown at Le Mans and, while Porsche, Peugeot and Toyota remain very close in terms of top speed (the top two now also in terms of lap time), the Isotta Fraschini - Audi R18 '16 is noticeably slower. This is due to the power expressed, only 503 hp, which cannot be further increased, together with the hybrid system which is anything but efficient. However, the tests continue, also because there are many other cars to fine-tune.

 

[GT PRO-AM]

Some updates on ongoing tests:

• I still don't like the Toyota GR010 much in terms of handling, it's true that it's the only true HyperCar and as such in any case it has less downforce than the LMP1s (despite having reduced their downforce, precisely to bring the performance closer to the various cars). I think I need to look for mechanical grip, working better on the suspensions. On the other hand it has a good top speed.
• precisely in terms of top speed: the Alpine (SRT Tomahawk turbocharged) with 950 hp is TOO fast compared to other cars. Around 350 km/h (217 mph) is still a credible top speed for an HyperCar, but no other car can come close. This aspect is all the more impressive considering that I tested this car with high rear downforce. It's true that I have to compensate for the absence of the hybrid system, but this power is excessive, I have to reduce it.
• on the other hand, and again in terms of top speed... unfortunately as expected the Isotta Fraschini (Audi R18 '16) is painfully slow on the straights, no matter what I do. Probably with a different BoP, with less ballast to carry, it would be slightly better, but right now it struggles to go above 310 km/h (193 mph), therefore at least 15 km/h (9 mph) less than the other cars, without obviously consider the aforementioned Alpine which is evidently overpowered. FIA/ACO, if you read me, do something for Isotta Fraschini!
• Porsche is currently the car to beat, exactly as I expected it to be: excellent handling, good top speed (despite the 963/919 equipped with the mid range rpm turbocharger not being able to go beyond 592 hp). Obviously the downforce adjustment matters a lot. Ferrari is slightly slower (which as I have already said is still based on the Porsche 919), which however has to carry more ballast and less power. About 1 second slower at Le Mans.
• Peugeot has notable top speed and in any case good downforce even in sections such as the Arnage, the Porsche Esses or the last chicanes. Lap times in hand, it was the second fastest car. It must be said that the current BoP, designed for the "base" 9X8 (the one without the rear wing), to compensate for various problems, is very favorable. Perhaps for the 9X8 "Evo", which will debut in Imola, there will be a very different BoP.
• BMW (Toyota GR010) despite a more favorable BoP than Toyota itself comes close in terms of lap time, but is not faster. As in reality, BMW is a bit of a "mystery object".
• Cadillac (naturally aspirated SRT Tomahawk) good but not great, but it is also the car that I have tested the least so far (about 200 km/124 miles of testing);
• Lamborghini (Toyota TS030 turbocharged) better than expected I must say, but even in this case it's a car that has not yet been tested much (more or less as much as the Cadillac).
• Acura (Toyota TS050) has no tests yet.

It's worth noting that, so far, all the cars have been tested at Le Mans, all (except the aforementioned BMW, Cadillac and Lamborghini) having covered at least 500 km/310 miles, all on RM tyres.

 

[GT PRO-AM]

Free Practice 1 - Provisional standings

Car	PP	Lap Time	Notes
Porsche 963 (Porsche 919)	870.56	3:25.636
Peugeot 9X8 (Peugeot 908 HDi)	870.17	3:25.836
Toyota GR010	867.29	3:26.694	Tested more than other cars
Cadillac V.Series-R (NA Dodge)	868.75	3:26.695
Ferrari 499P (Porsche 919)	867.24	3:26.885
Lamborghini (Toyota TS030)	864.61	3:28.787
BMW MHybrid (Toyota GR010)	864.30	3:29.744
Alpine A424 (TC Dodge)	865.33	3:29.880	Many mistakes during best lap
Isotta Fraschini (Audi R18 '16)	861.47	3:31.132	Sooo slow on straights
Acura ARX-06 (Toyota TS050)	867.02 (provisional)	no time set
Glickenhaus (Audi R18 '11)	860.76 (provisional)	no time set

 

[GT PRO-AM]

Free Practice 2 - Provisional standings

Car	PP	Lap Time	Notes
Porsche 963 (Porsche 919)	870.56	3:25.636
Peugeot 9X8 (Peugeot 908 HDi)	870.17	3:25.836
Toyota GR010	867.29	3:26.694
Cadillac V.Series-R (NA Dodge SRT)	868.75	3:26.695
Ferrari 499P (Porsche 919)	867.24	3:26.885
Alpine A424 (turbocharged Dodge SRT)	865.33	3:27.381
BMW MHybrid V8 (Toyota GR010)	864.30	3:27.478
Acura ARX-06 (Toyota TS050)	867.02	3:28.455	Favorable wind on straight (from N/NW) Reference BoP: IMSA Sebring 2024
Lamborghini (Toyota TS030)	864.61	3:28.787
Glickenhaus SCG007 (Audi R18 '11)	860.76	3:29.800	Reference BoP: WEC Bahrain 2023 (latest available)
Isotta Fraschini (Audi R18 '16)	861.47	3:30.536	Favorable wind on straight (from N/NE)
Oreca LMP2 (Toyota TS050)	847.40 (prov.)	3:35.470	First test, not sure which car to use as LMP2

 

[GT PRO-AM]

As highlighted by the free practice 2 table, I noticed that the favorable or contrary wind heavily affects the top speed of cars on the Hunaudieres/Mulsanne straight. Acura (Toyota TS050) and Isotta Fraschini (Audi R18 '16) offered two concrete examples of this:

• Acura had a top speed of 315-316 km/h with a favorable wind, a speed NEVER repeated, especially with contrary wind (305-306 km/h);
• Isotta Fraschini had a top speed of 320 km/h with a favorable wind, 313-314 with a contrary wind.

It's worth noting that the contrary wind can compromise the achievement of a high top speed in various ways: for example, when it has a S/SW direction, it's in a transverse direction with respect to the Tertre Rouge corner and therefore forces you to travel it with more caution, compromising the launch on the first section of the Hunaudieres/Mulsanne straight.

@GTvsForza, I noticed that you are trying to reproduce a WEC but are having difficulty balancing the performance of the various cars, see if my thread can be useful to you.

 

[GTvsForza]

I think I fixed the problem, setting BoP on makes it more close.

 

[GT PRO-AM]

I think I fixed the problem, setting BoP on makes it more close.

Can you use BoP with car from different classes, so having a multiclass race?

 

[GTvsForza]

Can you use BoP with car from different classes, so having a multiclass race?

I asked this in the Custom Races thread and they said yes. I even did a little test and it seems to work.

 

[GT PRO-AM]

I asked this in the Custom Races thread and they said yes. I even did a little test and it seems to work.

Ok, good news for you then anyway if you want my thread maybe will be useful in the future.

Next week I think I'll start publishing some setups, I can't say precisely when, though. Stay tuned.

 

[GT PRO-AM]

Update: since I'm using the various cars for grinding at the Gr. 1 race at Road Atlanta (not a random choice: the choice fell on Road Atlanta also to have references on a bumpy and slower track), I would like to take a little more time to review their setups. Therefore the publication of the tunes is postponed, I think you can understand. Sorry guys.

 

[GT PRO-AM]

Update: since the new BoP for the 6 Hours of Imola has been revealed (you can find it here), I think I will fix my tunes in accordance with this new BoP. Anyway maybe I will also publish the tunes developed in accordance with the old BoP, we'll see.

On the other hand, I think I will publish some tunes for the GT3 (Fanatec GT World Challenge) and LMGT3 (WEC) class, in another thread perhaps. But let me know if it might be preferable to publish everything here, instead.

See you soon!