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Tyre Pressure Engineer

Author Topic: Tyre Pressure Engineer  (Read 27015 times)

Online Guybrush Threepwood

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Re: Tyre Pressure Engineer
« Reply #15 on: December 20, 2015, 09:21:24 AM »
Wally is there any chance that you could put together a table of each car and the optimum tyre pressure?

Online Wally

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Re: Tyre Pressure Engineer
« Reply #16 on: December 20, 2015, 10:05:19 AM »
Wally is there any chance that you could put together a table of each car and the optimum tyre pressure?
Yeah, I'll work on it.
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Online Guybrush Threepwood

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Re: Tyre Pressure Engineer
« Reply #17 on: December 20, 2015, 04:14:12 PM »
That would be awesome.  I guess it'll take a lot of work though with probably over a couple of hundred different car and tyre combinations.

Online Wally

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Re: Tyre Pressure Engineer
« Reply #18 on: December 20, 2015, 08:27:43 PM »
That would be awesome.  I guess it'll take a lot of work though with probably over a couple of hundred different car and tyre combinations.

Nothing SMOP* can't fix.


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Online Guybrush Threepwood

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Re: Tyre Pressure Engineer
« Reply #19 on: December 20, 2015, 09:51:52 PM »
Nice.  I was also thinking that you could so a similar thing for tyre camber as what you've done for pressure.  If you look at the average temp across the tyre - inside | middle | outside, ideally the temps should be fairly even if your camber levels are right.

There may be too much variation though between different types of corners and straights?

Online Wally

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Re: Tyre Pressure Engineer
« Reply #20 on: December 21, 2015, 04:46:21 PM »
Here are the ideal pressures for grip of each car:

abarth500
Street: Front 36, Rear 34
Semislicks: Front 35, Rear 35
abarth500_s1
Street: Front 36, Rear 34
Semislicks: Front 35, Rear 35
acfl_r8_gordini
Street: Front 36, Rear 34
Semislicks: Front 35, Rear 35
alfa_romeo_giulietta_qv
Street: Front 40, Rear 40
alfa_romeo_giulietta_qv_le
Street: Front 40, Rear 40
alfa_tzz65
bmw_1m
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_1m_s3
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_m3_e30
Street 90s: Front 37, Rear 41
Street: Front 37, Rear 41
Semislick: Front 34, Rear 34
bmw_m3_e30_drift
Street 90s: Front 37, Rear 41
Street: Front 37, Rear 41
Semislick: Front 34, Rear 34
bmw_m3_e30_dtm
Slicks Soft DTM90s: Front 39, Rear 39
Slicks Medium DTM90s: Front 39, Rear 39
Slicks Hard DTM90s: Front 39, Rear 39
bmw_m3_e30_gra
Slicks Soft DTM90s: Front 39, Rear 39
Slicks Medium DTM90s: Front 39, Rear 39
Slicks Hard DTM90s: Front 39, Rear 39
bmw_m3_e30_s1
Street 90s: Front 37, Rear 41
Street: Front 37, Rear 41
Semislick: Front 34, Rear 34
bmw_m3_e92
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_m3_e92_drift
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_m3_e92_s1
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_m3_gt2
Slick SuperSoft: Front 35, Rear 35
Slick Soft: Front 35, Rear 35
Slick Medium: Front 35, Rear 35
Slick Hard: Front 35, Rear 35
Slick SuperHard: Front 35, Rear 35
bmw_z4
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_z4_drift
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
bmw_z4_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
bmw_z4_s1
Street: Front 40, Rear 40
Semislicks: Front 35, Rear 35
broadspeedjaguar_v03
caterham_academy
ferrari_312t
Soft 70F1: Front 27, Rear 28
Hard 70F1: Front 27, Rear 28
ferrari_458
Semislicks: Front 35, Rear 35
Street: Front 35, Rear 35
ferrari_458_gt2
Slick SuperSoft: Front 35, Rear 35
Slick Soft: Front 35, Rear 35
Slick Medium: Front 35, Rear 35
Slick Hard: Front 35, Rear 35
Slick SuperHard: Front 35, Rear 35
ferrari_458_s3
Trofeo Slicks: Front 29, Rear 30
Semislicks: Front 35, Rear 35
ferrari_599xxevo
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ferrari_f40
Street90S: Front 42, Rear 42
Street: Front 41, Rear 41
Semislicks: Front 33, Rear 33
ferrari_f40_s3
Semislicks: Front 33, Rear 33
Slicks 90s: Front 33, Rear 33
ferrari_laferrari
Hypercar road: Front 34, Rear 36
Hypercar Trofeo: Front 35, Rear 35
ginetta_g55
ks_abarth500_assetto_corse
Slicks: Front 32, Rear 32
ks_alfa_mito_qv
Street: Front 40, Rear 40
Semislicks: Front 34, Rear 34
ks_alfa_romeo_155_v6
Slicks Soft DTM90s: Front 39, Rear 39
Slicks Medium DTM90s: Front 39, Rear 39
Slicks Hard DTM90s: Front 39, Rear 39
ks_alfa_romeo_4c
Semislicks: Front 34, Rear 35
Street: Front 38, Rear 39
ks_alfa_romeo_gta
Vintage 60s: Front 40, Rear 40
ks_audi_r8_lms
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_audi_r8_plus
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
ks_audi_sport_quattro
Street vintage: Front 50, Rear 50
Street: Front 36, Rear 36
Semislicks: Front 36, Rear 36
ks_audi_sport_quattro_s1
Street vintage: Front 50, Rear 50
Street: Front 36, Rear 36
Semislicks: Front 36, Rear 36
ks_bmw_m235i_racing
Trofeo Slicks: Front 29, Rear 29
ks_bmw_m4
Street: Front 38, Rear 38
Semislick: Front 36, Rear 36
ks_bmw_m4_akrapovic
Street: Front 38, Rear 38
Semislick: Front 36, Rear 36
ks_corvette_c7r
Slick SuperSoft: Front 35, Rear 35
Slick Soft: Front 35, Rear 35
Slick Medium: Front 35, Rear 35
Slick Hard: Front 35, Rear 35
Slick SuperHard: Front 35, Rear 35
ks_ford_escort_mk1
Slicks 70s: Front 45, Rear 45
ks_ford_gt40
Vintage: Front 32, Rear 35
ks_glickenhaus_scg003
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_lamborghini_countach
Pirelli Cinturato: Front 50, Rear 53
Street: Front 37, Rear 42
Semislick: Front 37, Rear 42
ks_lamborghini_countach_s1
Pirelli Cinturato: Front 50, Rear 53
Street: Front 37, Rear 42
Semislick: Front 37, Rear 42
ks_lamborghini_gallardo_sl
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
ks_lamborghini_gallardo_sl_s3
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
ks_lamborghini_huracan_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_lamborghini_huracan_st
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_lamborghini_miura_sv
Cinturato: Front 48, Rear 50
ks_lotus_25
F1 1963: Front 45, Rear 45
ks_lotus_72d
Soft 70F1: Front 27, Rear 28
Hard 70F1: Front 27, Rear 28
ks_mclaren_650_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_mclaren_f1_gtr
Soft Slicks 90s: Front 34, Rear 35
Medium Slicks 90s: Front 34, Rear 35
Hard Slicks 90s: Front 34, Rear 35
ks_mclaren_p1
Hypercar road: Front 34, Rear 36
Hypercar Trofeo: Front 32, Rear 33
ks_mercedes_190_evo2
Slicks Soft DTM90s: Front 39, Rear 39
Slicks Medium DTM90s: Front 39, Rear 39
Slicks Hard DTM90s: Front 39, Rear 39
ks_mercedes_amg_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_mercedes_c9
Soft Slicks 90s: Front 24, Rear 24
Medium Slicks 90s: Front 24, Rear 24
Hard Slicks 90s: Front 24, Rear 24
ks_nissan_gtr
Hypercar road: Front 35, Rear 35
ks_nissan_gtr_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
ks_ruf_rt12r
Semislicks: Front 33, Rear 40
ks_ruf_rt12r_awd
Semislicks: Front 33, Rear 40
ks_toyota_gt86
ECO: Front 40, Rear 40
Street: Front 40, Rear 40
Semislicks: Front 34, Rear 34
ktm_xbow_r
Semislicks: Front 34, Rear 35
lotus_2_eleven
Semislicks: Front 32, Rear 33
lotus_2_eleven_gt4
Semislicks: Front 32, Rear 33
lotus_49
F1 1967: Front 22, Rear 22
lotus_98t
Qualifying: Front 28, Rear 28
Soft 86F1: Front 28, Rear 28
Medium 86F1: Front 28, Rear 28
Hard 86F1: Front 28, Rear 28
lotus_elise_sc
Street: Front 35, Rear 35
Semislicks: Front 32, Rear 33
lotus_elise_sc_s1
Street: Front 35, Rear 35
Semislicks: Front 32, Rear 33
lotus_elise_sc_s2
Street: Front 35, Rear 35
Semislicks: Front 32, Rear 33
lotus_evora_gtc
Slick Soft: Front 32, Rear 35
Slick Medium: Front 32, Rear 35
Slick Hard: Front 32, Rear 35
lotus_evora_gte
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
lotus_evora_gte_carbon
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
lotus_evora_gx
Slick Soft: Front 32, Rear 35
Slick Medium: Front 32, Rear 35
Slick Hard: Front 32, Rear 35
lotus_evora_s
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
lotus_evora_s_s2
Street: Front 36, Rear 37
Semislicks: Front 36, Rear 37
lotus_exige_240
Street: Front 35, Rear 35
Semislicks: Front 32, Rear 33
lotus_exige_240_s3
Street: Front 35, Rear 35
Semislicks: Front 32, Rear 33
lotus_exige_s
Street: Front 34, Rear 35
Semislicks: Front 34, Rear 35
lotus_exige_scura
Street: Front 35, Rear 35
Semislicks: Front 32, Rear 33
lotus_exige_s_roadster
Street: Front 34, Rear 35
Semislicks: Front 34, Rear 35
lotus_exige_v6_cup
Street: Front 34, Rear 35
Semislicks: Front 34, Rear 35
lotus_exos_125
Slick Exos: Front 24, Rear 24
lotus_exos_125_s1
Slick SuperSoft: Front 24, Rear 24
Slick Soft: Front 24, Rear 24
Slick Medium: Front 24, Rear 24
Slick Hard: Front 24, Rear 24
mazda_787b
mazda_miata
Street-90s: Front 35, Rear 35
Modern Street: Front 35, Rear 35
mclaren_m23
mclaren_mp412c
Semislicks: Front 35, Rear 35
Street: Front 35, Rear 35
mclaren_mp412c_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
mercedes_sls
Street: Front 35, Rear 35
Semislicks: Front 35, Rear 35
mercedes_sls_gt3
Slick Soft: Front 33, Rear 33
Slick Medium: Front 33, Rear 33
Slick Hard: Front 33, Rear 33
nissan_primera_btcc
p4-5_2011
Slick SuperSoft: Front 32, Rear 35
Slick Soft: Front 32, Rear 35
Slick Medium: Front 32, Rear 35
Slick Hard: Front 32, Rear 35
Slick SuperHard: Front 32, Rear 35
pagani_huayra
Hypercar road: Front 33, Rear 34
TopGear Record: Front 31, Rear 33
pagani_zonda_r
Slick Soft: Front 31, Rear 33
Slick Medium: Front 31, Rear 33
Slick Hard: Front 31, Rear 33
peugeot_504
porsche_550_1500_rs_spyder
porsche_550_1500_rs_spyder_s1
rover_mini
rover_mini_s1
rover_mini_s2
ruf_yellowbird
Street90S: Front 40, Rear 38
Street: Front 40, Rear 38
Semislicks: Front 34, Rear 35
shelby_cobra_427sc
Vintage: Front 42, Rear 42
Street: Front 42, Rear 42
tatuusfa1
Slicks Soft: Front 24, Rear 24
Slicks Medium: Front 24, Rear 24
Slicks Hard: Front 24, Rear 24
vsf1_mclaren-mp413
Soft: Front 24, Rear 24
Medium: Front 24, Rear 24
Hard: Front 24, Rear 24
vsfr-formularenault35_2014_hdf
Michelin RST3.5 Dry: Front 23, Rear 23
vsfr-formularenault35_2014_ldf
Michelin RST3.5 Dry: Front 23, Rear 23
vsfr-formularenault35_2014_mdf
Michelin RST3.5 Dry: Front 23, Rear 23
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Online Guybrush Threepwood

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Re: Tyre Pressure Engineer
« Reply #21 on: December 21, 2015, 04:51:41 PM »
That's amazing.  Awesome work Wally!

This info will help a lot.

Online Wally

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Re: Tyre Pressure Engineer
« Reply #22 on: December 21, 2015, 05:30:06 PM »
Cool. I'm not sure what to make of the camber though. I think that's a little more complicated than just measuring IMO temp spreads. AC doesn't output tyre temps to telemetry channels, and I don't think you can read surface temperatures from an app (only core temperatures). Otherwise, you could get a good indication of optimum pressures (middle temp neither too hot nor too cold), and good cambers (by averaging out surface temp spreads, taking readings only while cornering).
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Online Bird

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Re: Tyre Pressure Engineer
« Reply #23 on: December 21, 2015, 05:33:37 PM »
Ah but that'd completely take the magick out of setting the car up! ;)

Online Wally

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Re: Tyre Pressure Engineer
« Reply #24 on: December 21, 2015, 05:38:22 PM »
Ah but that'd completely take the magick out of setting the car up! ;)
That's the plan! Remove some of the black magic. Problem is, approaches like these assume that just because an even tyre temp spread is a good thing in real life, that it makes any difference in AC. It might be completely irrelevant to car behaviour in AC.
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Online Wally

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Re: Tyre Pressure Engineer
« Reply #25 on: December 21, 2015, 06:06:45 PM »
Also, for GT3 tyres, the optimum temps are:

Soft: 80 - 95
Medium: 75 - 90
Hard: 75 - 100
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Offline marty

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Re: Tyre Pressure Engineer
« Reply #26 on: December 28, 2015, 11:00:49 AM »
I havent tried this app yet but would be great if it came up and showed the ideal temps and pressures for the current car and tyres in use. I mean not all of us will hack into the physics files to find this data but really this is the sort of info that should be shown inside the pit or at least as it loads.

I mostly use temps and pressures from dashmeter pro and can also look back at the telemetry feature in it to shows temps and pressures after a run. For that I dont really need this app going by what it does but getting easy access to ideal temps and pressures would make the app very usefull for me.

Regarding cambers this would mostly be used to dial in the ideal temp range at the ideal pressure. Raise or lower cambers to try and get temps and pressures both at the ideal range. In some cases you wont ever get both in the optimum window and in that case you would try mostly for temps but if your still way out on the temps you will just work on pressure.

I try and balance hot pressure around the car more then temps though, you will never get even temps all the way around but having tyres under pressure or way over at one corner will effect laptimes even more.

Online Wally

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Re: Tyre Pressure Engineer
« Reply #27 on: December 28, 2015, 03:29:53 PM »
Ideal pressures for each car (excluding mods).
Put the attached file into assettocorsa\apps\python\TyrePressureEngineer.

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Online Guybrush Threepwood

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Re: Tyre Pressure Engineer
« Reply #28 on: December 29, 2015, 08:52:05 AM »
I wonder with the camber thing whether, instead of using temps as suggested, there is an optimum grip measurement output from AC?

Actually that would be handy for all changes really, if you could somehow measure and graph grip at corner entry, exit and braking etc. That would allow you to see the difference changes to a heap of different settings makes.  But I am just dreaming.
« Last Edit: December 29, 2015, 08:54:24 AM by Guybrush Threepwood »

Online Wally

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Re: Tyre Pressure Engineer
« Reply #29 on: December 29, 2015, 09:20:13 AM »
I wonder with the camber thing whether, instead of using temps as suggested, there is an optimum grip measurement output from AC?

Actually that would be handy for all changes really, if you could somehow measure and graph grip at corner entry, exit and braking etc. That would allow you to see the difference changes to a heap of different settings makes.  But I am just dreaming.
Probably the best thing that apps actually have access to is lat and long G forces. The more grip, the more G's you can pull.
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