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Porsche 550 Spyder

Porsche 550 Spyder v2.5

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Porsche 550 spyder v2.0 updated Sep 15, 2016
550 body panels have been completed again and they were reborn. Rear cowl, doors around, and front fenders around were improved. Moreover I achieved to reduce 45000 polygons manually in this work.
I'm reviewing the shape, size, location, and angle of dash knobs, headlights, turnsignals, taillights, and so on.
To suit the cockpit for new body panel at that time. Bottoms of doors are raised, so I had to manage to adjust cockpit too. Working with the cockpit earned about 10000 polygons in the end.
Annoying bug at the rear cowl, the shape is wrong, big mistake, I fixed it.
Many parts of the 550 mod are revamped.

Followings are update details in new files.
- Revamped 3D model
- Driver position has been moved lower
- Added new driver's eye position alongside Kunos camera update since version 1.6.0.
- Adjusted camera views
- New UVmap
- Ambient occlusion effect
- New template for livery
- Added them to the interior, serial number plate, fuse box, fuel pump, foot dimmer switch, fire extinguisher
- S1 hill climb model has new front face, tonneau cover, and tubular frame in the cockpit
- Clipping noise of base model idle sound is fixed
- Improve sound quality of base model
- Adjusted volume levels of each sounds.
- Adjusted the outside of the engine idle sound.
- Added [HEAD_MOVEMENT] in driver3d.ini
- New preview screens
- Some shader adjustments

- New V10 Tyre model
- New gear ratios for Hillclimb version from Porsche standards ratios
- Simplified setup menus, removed many options
- Fine tuning of gearbox timings, clutch, aerodynamics, etc..

New Credits added
- Base version historical liveries from No.8 to 20 by Patrice Cote
- Hillclimb version historical liveries from No.5 to 15 by Patrice Cote

Note: On tyre parameters, ideal pressure is 42 psi, optimal temperature range is 40 to 80C for R3, 40 to 90C for R5.

Adjusted shader settings and polygon counts of LOD optimization
LOD A 168100(base) 166843(hillclimb)
LOD B 90016 5m
LOD C 37554 24m
LOD D 4243 48m


Release notes
The two physics set.
The base 1955 Porsche 550/1500 RS (110 BHp, Dunlop R3 natural rubber tires - overheats at 80C, huge slip angle possible)
And the "s1" version being a late 50's hillclimb prepared version with RSK engine part upgrade, increased displacement (1650-1700cc) and new Dunlop R5 tires (synthetic rubber) slightly wider rubber at the rear. Such a car finished 2nd at the 1960 Pikes Peak with Roger Ward at the wheel. We used dyno curves of a 547 1755cc engine.

Porsche 550 physics background
The 550 was basically the first ever mid-engine road car, so its design is not perfect. Suspension was all based on VW parts. Front was the double torsion bars (a Porsche patent) and rear was a basic swing axle - both causing horrible camber change under cornering. On top of that, the frame was weak and twisted a lot. It has drum brakes and 50's tires less than 100mm (4'') wide.
However, aerodynamics was very sleek. Weight and inertia are extremely low (under 600kg) and the 4-cam 547 engine was way ahead of its time, revving easily up to 7500 rpm. It would be Porsche's race department workhorse for an entire decade.

Overall the car has good handling for its time, but it was notoriously oversteering . Many period pictures show 550's in oversteer.
Ken Miles (aka "Spyderman") said: "Steering the 550 was very much a matter of very large steering movement to produce the desired result",
He also mentioned this about the 550 vs 550A (not in the mod currently) “The change in handling is unbelievable. Gone was the excessive oversteer (of the original 550), the RS (550A) was now as forgiving a car as one could possibly wish to meet."

Ensyuya (Mitsunari Ishii) : Project lead, 3d Model, textures, animations, shaders, sounds
Patrice Cote : Physics, UI car history, historical liveries base version from No.8 to 20, hillclimb version from No.5 to 15

Engine sound sources of base model except idling sound : Citytea

Beta tester : Phil E, Maseratialfa, Jon Uyan and Hutch from the CMS Historical racing league (cmsracing.com)

Special thanks to "Toonces" for sharing his hands-on experience and notes on the real 550.

About sounds
In base model of this Porsche 550 mod, the engine sound sources are from real type 547 engine that Citytea recorded around 2006 at Salzburgring with his old Boss R-1 digital-recorder. He gave us permission to use with pleasure.

Otherwise, the engine sound of S1 upgrade model has been made by Ensyuya from scratch build completely.

Other sound samples are recorded by Ensyuya from real classic VWs or Kunos original ones.

Base model engine sound was made for type 547/1 and 547/2, S1 upgrade model one was made for type 547/3 and 547/4.

Damage model function fully works
550 spyder mod got all functions that should be in this mod. All functions Kunos implemented in AC are working properly.

Benchmark of 550/1500 RS Spyder mod (Ensyuya, Jun 27, 2015)

I tried to measure the PC system performance hit of 550/1500 RS Spyder mod, because the development of basic part of this mod has been completed all. I used the official Alfa Romeo GTA for comparison as the benchmark. Generally results are not so bad for this mod. The load of this mod to the system is about 30% heavier than the Alfa Romeo GTA.

System specification of my PC

CPU Core i3 Clarkdale @3.5GHz

System memory 8GB

GPU Geforce 560GTX with graphics memory 1GB


Resolution 1280 x 720

Single Screen

Full Screen

Anisotropic Filtering 4x

Anti-Aliasing Samples Off

World detail Max

Shadow Resolution Ultra

Smoke generation Normal

smoke in mirrors Off

Enable post - processing effects Default

Mirror Resolution Normal

HQ Mirror Reflection Off

Reflection Quality Medium

Reflection Rendering Frequency Medium
Quick Race

Single-make grid (Opponents will use the same car as you)




Porsche 550/1500 RS Spyder

Opponents total = 10

Warning CPU Occupancy > 99% = once for a moment

FPS min = 30
max = 49
average = 40+

Alfa Romeo GTA

Opponents total = 14

Warning CPU Occupancy > 99% = once for a moment

FPS min = 26
max = 40
average = 30+


Eastern Creek Brabham

Porsche 550/1500 RS Spyder

Opponents total = 9

Warning CPU Occupancy > 99% = none

FPS min = 28
max = 58
average = 35+

Alfa Romeo GTA

Opponents total = 13

Warning CPU Occupancy > 99% = 3 times

FPS min = 22
max = 58
average = 30+-



Porsche 550/1500 RS Spyder

Opponents total = 10

Warning CPU Occupancy > 99% = none

FPS min = 31
max = 47
average = 35+

Alfa Romeo GTA

Opponents total = 13

Warning CPU Occupancy > 99% = none

FPS min = 27
max = 50+
average = 35+-

Ensyuya, Patrice Cote, updated Sep 15, 2016

If you enjoy this mod and would like to support us, please consider a donation:

Screenshot_porsche_550_1500_rs_spyder_s1_mills_18-1-117-22-38-41.jpg Screenshot_porsche_550_1500_rs_spyder_s1_mills_18-1-117-22-44-8.jpg Screenshot_porsche_550_1500_rs_spyder_s1_riverside_16-1-117-4-33-16.jpg Screenshot_porsche_550_1500_rs_spyder_s1_riverside_16-1-117-4-34-21.jpg
File size
151.8 MB
First release
Last update
4.72 star(s) 36 ratings

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Latest reviews

Great little car to drive. Handling and sounds are awesome! Thank you for this excellent mod.
Excelent work. Many thanks.
The (only) thing i dont like is the Brite white steering wheel. like the made of wood from the 550A better. but it is still a nice add-on.
The only mod that has a soul. Thank you
good job!! James Dean car!
Love this car thank you
Excelent car! The feeling is amezing!
Very good, perfect 3 model, awesome physics.
Great job!
very good
The 3D model and cockpit aren't really a looker, but the suspension feels very believable (and AWEsome!), fantastic work on that! So far I would round 4.5 up to 5 stars, weren't it for the tires. I know you got clues from the Maseratis; maybe get some more clues from the upcoming Kunos Porsche 718 and mix that into your current tire data ...and also review the temperatures, then you'll get the full 5 stars from me. It's very fun to drive already though, thank you for that!
Thanks for update the sounds of this wanderful mod. The physics are amezing, lot of fun driving it.
Assetto Corsa - Ensyuya - Porsche 550 Spyder 2.3 @Nurburgring Sprint(T500RS)(4K DSR)(Cockpit-Cam)
Assetto Corsa - Ensyuya - Porsche 550 Spyder 2.3 @Nurburgring Sprint(T500RS)(4K DSR)(TV-Cam)
Great job, fantastic Mod. Thank you very much.
Very good improvement! You can drive this wonderful car on Bridgehampton (TIKAL SPORT).
Great car! I will be driving this Porsche in the meantime before the Porsche pack is released. Thanks!
Yesterday I tried it for the first time and have to say that I love this little car. Alas, my love is not completely requited - apparently the S1 version hates me and even tried to kill me. The basic car is great fun to drive. The S1 is an excellent choice for those who love carousels and a merry-go-rounds.
Excellent work!
One of the best Mods out there!, period!
Many thanks!
This is currently the BEST vintage car for Assetto Corsa.

It's really tricky to drive, it moves all over the track and VERY careful throttle usage is neeed to corner well. What a stellar mod!
Really nicely made car, awesome sound (no idea if it is genuine). Very addictive drive.
Awesome update, it is just right and very entertaining. I also found it drivable, standard is not hard to handle at all. You people who were rude enough to give 3 or even 2 stars just because YOU couldn't handle it, those stars are for your skill and knowledge of driving such car. It is not GT3, where you can be flat out most of time. This is great mod, sounds good, drives well, and model is nice. Definitely worth to add to the garage.
I'm so glad that you upgraded this already beloved sweety. With v10 rubbers, it got more life.

If you you don't like vintage cars, that isn't railcar-like, as the modern supercars with its sillyproof TC, don't rate down a mod for this reason! Rating is for the mod, not for the real car!
Thank you for the word. That's right, it is as you say.
I'm not the perfect driver but still can do nice powerslides when the tires get warm. Good little car.

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