Car Information and physics updates Mon, 20 Apr 2026 05:10:23 +0000 Mon, 20 Apr 2026 05:10:23 +0000 KW Studios Forum https://forum.kw-studios.com/index.php?forums/car-information-and-physics-updates.141/ Thu, 09 Apr 2026 10:47:54 +0000 https://forum.kw-studios.com/index.php?threads/gt3s-have-a-limited-top-speed.21332/ https://forum.kw-studios.com/index.php?threads/gt3s-have-a-limited-top-speed.21332/ invalid@example.com (Rafael 2) Rafael 2 6 Mon, 08 Dec 2025 15:08:16 +0000 https://forum.kw-studios.com/index.php?threads/official-complete-car-physics-ai-status-lookup-updated-08-12-2025.15151/ https://forum.kw-studios.com/index.php?threads/official-complete-car-physics-ai-status-lookup-updated-08-12-2025.15151/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson 202 Tue, 05 Nov 2024 16:04:12 +0000 https://forum.kw-studios.com/index.php?threads/tire-temperatures-setup-helper.17494/ https://forum.kw-studios.com/index.php?threads/tire-temperatures-setup-helper.17494/ invalid@example.com (MarcoP) MarcoP
This is a tool created for all the sim racers that are simply not able to get the tire temperatures right or are too lazy to calculate pressure and camber for themselves (including me...).

All you have to do is extract the .zip file attached and start the Rocky.exe.

This starts a small window:
View attachment 25299

Additionally you will have three...

Tire temperatures - setup helper]]> 175 Sat, 10 Feb 2024 08:54:13 +0000 https://forum.kw-studios.com/index.php?threads/physics-update-tyres-force-feedback-ai-and-general-developments-10-12-2019.14049/ https://forum.kw-studios.com/index.php?threads/physics-update-tyres-force-feedback-ai-and-general-developments-10-12-2019.14049/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson Tyres
Always a hot topic in sim racing, let's start here. It's true the basis of our tyre model can trace it's routes back a year or two, but that absolutely does not mean that it's been standing still. Like every aspect of RaceRoom it's undergone constant development, tweaks and improvements. Firstly we've made absolutely sure that every element of the tyre model is working as it should be and did find some errors to fix. Over the last two and a half years everything has been fully...

[Physics Update] Tyres, force feedback, AI and general developments - 10/12/2019]]> 242 Thu, 21 Dec 2023 11:40:09 +0000 https://forum.kw-studios.com/index.php?threads/optimal-tire-temperatures-and-pressures.18397/ https://forum.kw-studios.com/index.php?threads/optimal-tire-temperatures-and-pressures.18397/ invalid@example.com (ShortyBuzzGER) ShortyBuzzGER Adjusting tyre pressures thread from Alex but it takes it a bit further.
I was curious about the optimal pressures and temperatures one should aim for and after seeing some other people on discord interested in this as well I decided to tackle this.

How did I do that? Just opening a leaderboard challenge with every car available and looking at the settings screen. For...

Optimal tire temperatures and pressures]]> 15 Fri, 02 Jun 2023 20:03:18 +0000 https://forum.kw-studios.com/index.php?threads/moza-r5.18884/ https://forum.kw-studios.com/index.php?threads/moza-r5.18884/ invalid@example.com (aleksanderulitin) aleksanderulitin 35 Mon, 14 Mar 2022 19:42:47 +0000 https://forum.kw-studios.com/index.php?threads/weird-behavior-while-sliding.18204/ https://forum.kw-studios.com/index.php?threads/weird-behavior-while-sliding.18204/ invalid@example.com (Pierluigi Vinci) Pierluigi Vinci 9 Mon, 31 Jan 2022 17:35:15 +0000 https://forum.kw-studios.com/index.php?threads/physics-update-p1-p2-daytona-prototype-27-01-2022.18063/ https://forum.kw-studios.com/index.php?threads/physics-update-p1-p2-daytona-prototype-27-01-2022.18063/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson Note: the #1 old setups will not work with any updated cars. Trying to use these setups will result in a very poor handling car. They must be deleted!

First, some background..

The Le Mans Prototype classes can trace their roots back to the early 90s WSC category, them selves grew out of the decline of the Group C & GTP series. The idea was to reign in the massive downforce produced by the aforementioned classes as well as reduce running and development costs. The LMP classes went...

[Physics Update] P1, P2 & Daytona Prototype - 27/01/2022]]> 37 Fri, 14 Jan 2022 10:33:14 +0000 https://forum.kw-studios.com/index.php?threads/porsche-911-gt3r-aerodynamic-drag-influenced-by-rear-wing-settings.17996/ https://forum.kw-studios.com/index.php?threads/porsche-911-gt3r-aerodynamic-drag-influenced-by-rear-wing-settings.17996/ invalid@example.com (robert habinak) robert habinak
I have issue with Porsche 911 GT3R 2019 rear wing aerodynamics drag depending on wing settings.
With rear wing max. settings top speed on Paul Ricard was 269,9 kph. Than I set up to rear wing to min. drag and top speed was 271,4 kph. So difference was only 1,5 kph. I think It should bee 10x bigger difference.


Rear wing on Porsche 911 GT3R 2019 is one of biggest in GT3 class because of cars architekture . So rear wing setting must have big impact on car top speed.

I have a realistic...

Porsche 911 GT3R aerodynamic drag influenced by rear wing settings]]> 14 Tue, 04 Jan 2022 11:25:44 +0000 https://forum.kw-studios.com/index.php?threads/gtr2-car-set-up-guides.15598/ https://forum.kw-studios.com/index.php?threads/gtr2-car-set-up-guides.15598/ invalid@example.com (Peter Koch) Peter Koch So I decided to upload them here.

First is the GTR engineer's handbook and the other is Setup your car in 21 steps.]]> 2 Sun, 02 Jan 2022 22:32:16 +0000 https://forum.kw-studios.com/index.php?threads/physics-update-gto-18-12-2021.17927/ https://forum.kw-studios.com/index.php?threads/physics-update-gto-18-12-2021.17927/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson Note: the #1 rule here is that old setups will not work with any updated cars. Trying to use these setups will result in a very poor handling car. They must be deleted!

Introduced by IMSA in 1971 the GTO class catered for grand touring type cars of 2.5L displacement or more, the letter O referring to "over 2.5L. By the time the early 80s had passed the 2.5L limit had been increased to 3.0L with a maximum capacity of 6.0L.
Performance equalisation was achieved through a sliding scale...

[Physics Update] GTO - 18/12/2021]]> 32 Mon, 18 Oct 2021 11:05:28 +0000 https://forum.kw-studios.com/index.php?threads/i-need-help.17741/ https://forum.kw-studios.com/index.php?threads/i-need-help.17741/ invalid@example.com (peter_loeffelholz) peter_loeffelholz At one sim is on all tracks over the corner signs 50/100/150/200 no green to red signs . What is the setting to change it? I will are all equal.


Question 2 :

I searching for a tool to make a own Championship on my dedi server.]]> 8 Sat, 16 Oct 2021 22:05:26 +0000 https://forum.kw-studios.com/index.php?threads/cayman-gt4-suspension-damage-model-problems.17748/ https://forum.kw-studios.com/index.php?threads/cayman-gt4-suspension-damage-model-problems.17748/ invalid@example.com (Yossarian) Yossarian
Cayman GT4 - suspension damage model problems]]> Sat, 20 Mar 2021 18:04:10 +0000 https://forum.kw-studios.com/index.php?threads/mechanical-trail-pneumatic-trail-what-are-they-and-why-they-are-important.16649/ https://forum.kw-studios.com/index.php?threads/mechanical-trail-pneumatic-trail-what-are-they-and-why-they-are-important.16649/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson patch notes. So, before misinformation spreads like Chinese whispers I will dive in and explain what these two things entail.

Pneumatic trail

This describes the distance between the physical centreline of the tyre at ground level and the location about which the...

Mechanical trail, pneumatic trail: What are they and why they are important.]]> 8 Thu, 25 Feb 2021 11:16:40 +0000 https://forum.kw-studios.com/index.php?threads/fyi-wtcr-drifting-in-macau-hairpin.16501/ https://forum.kw-studios.com/index.php?threads/fyi-wtcr-drifting-in-macau-hairpin.16501/ invalid@example.com (benoityip) benoityip

watch for 0:33 green car
]]> 3 Sun, 10 Jan 2021 10:22:22 +0000 https://forum.kw-studios.com/index.php?threads/enthusiastic-beginner-audi-tt.16184/ https://forum.kw-studios.com/index.php?threads/enthusiastic-beginner-audi-tt.16184/ invalid@example.com (Heinrich der Bauer) Heinrich der Bauer
Due to the recent update I created a new post and could not find a specific answer elsewhere either.
I hope I...

Enthusiastic beginner / audi TT]]> 10 Fri, 25 Dec 2020 11:13:49 +0000 https://forum.kw-studios.com/index.php?threads/tyre-temperature-dropping-too-fast-for-wtcc-wtcr-at-bathurst-straight.16160/ https://forum.kw-studios.com/index.php?threads/tyre-temperature-dropping-too-fast-for-wtcc-wtcr-at-bathurst-straight.16160/ invalid@example.com (benoityip) benoityip @Alex Hodgkinson

Possible bug at tyre model

I tried WTCC 2014 at Bathurst for few laps, the tyre temperature drops very fast, at the end of the race, I have around 59 at the front and 35 at the rear.

I also tried WTCR as well at Bathurst, the tyre temperature also drops, but not as quick as WTCC 2014

The temperature drops quite fast at the long straight.

Is this a bug?

As a FF driver myself, I think that front tyre temperature should be more than FR car because front...

Tyre temperature dropping too fast for wtcc wtcr at Bathurst straight]]> 1 Wed, 23 Dec 2020 22:29:28 +0000 https://forum.kw-studios.com/index.php?threads/update-info.16146/ https://forum.kw-studios.com/index.php?threads/update-info.16146/ invalid@example.com (Nash Bobo) Nash Bobo
Thanks

"Nash"]]> 2 Sun, 20 Dec 2020 20:43:44 +0000 https://forum.kw-studios.com/index.php?threads/engine-maps-throttle-maps-turbo-updates-and-more.16073/ https://forum.kw-studios.com/index.php?threads/engine-maps-throttle-maps-turbo-updates-and-more.16073/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson
View attachment 21991

With two new new additions:

View attachment 21992

View attachment 21993

Engine Braking Reduction:

This is something we always had to tinker with behind the scenes. The real power of this became apparent when we started to look at dialling out some tricky behaviours from some of our cars. Namely the off-throttle any-speed unrecoverable spins,...

Engine maps, throttle maps, turbo updates and more]]> 5 Sun, 20 Dec 2020 13:55:22 +0000 https://forum.kw-studios.com/index.php?threads/cupra-e-racer.15786/ https://forum.kw-studios.com/index.php?threads/cupra-e-racer.15786/ invalid@example.com (Alex Hodgkinson) Alex Hodgkinson

Following on from the Volkswagen IDR, I'm happy we can finally show off our second all-electric car. There's a lot to discuss here, so let's get cracking. First some vital statistics;

Weight: 1680kg with the driver
Power: 670hp peak
Peak torque: 975nm at 0rpm
Drivetrain: All-electric RWD with regenerative braking...

Cupra E-Racer]]> 6