Welcome to the Audi R8 GT3 EVO 2 release notes blog. In this page you will find the detailed notes compiled by the team after each session when creating the fast and safe variants of the new CDA4 Audi R8 setups. Please carry on reading below to see what our team found:
- Soft suspension is used for good mechanical grip.
- Higher bumpstop ranges on the front provide rotation and kerb compliance.
- Lower bumpstop range on the rear combined with the soft suspension provides good traction with the necessary on power rotation.
- A decent amount of front range is used to help kerb compliance at the first corners.
- A soft suspension setup is used to provide the best grip which works well with the bumpstops needed for the kerbs.
- The kerbs and bumps present a challenge for this car, thus the dampers and bumpstops are set to make these easier, compromising the general balance but can be tuned through ride height, diff and toe settings.
- The safe set is aimed more towards better traction and more predictable over kerbs but will be slower overall.
- Electronics are important to the entry and exit of corners, with higher values of TC and ABS making it easier to drive.
- It’s important to trail brake hard into the corners to get it to rotate.
- The primary focus at Paul Ricard is traction for the slow speed corners and enough stability into the fast right at the end of the back straight.
- In order to make this combination work, the front bumpstop range has been reduced significantly with a soft ARB configuration to help the car ease into the long flowing corners of the circuit.
- Additionally the rear rebound and front bump have been stiffened. This provides better pitch control into high speed braking zones and helps in making the trail braking a little more forgiving.
- The preload has also been dropped as this will help the car maintain optimal rotation through slow speed corners.
- A low front bumpstop range is needed to keep the car stable in Copse. The ARBs have been set up to maintain a good balance for rotation through high speed corners.
- In order to get the car more mechanically planted in low speed however the springs on the rear have been softened compared to the front.
- A stiffer front damper configuration ensures that the car has enough agility and response into high speed corners.
- The setup for Spa uses quite a large bumstop range on the rear to improve overall traction and stability through direction changes. The bumpstops on the front have been adjusted to provide optimal grip through Eau Rouge and to prevent the car from bottoming out at Radilion.
- The ARBs have also been stiffened to ensure that the car does not roll too much, given the bumpstop ranges have been increased.
- The rear toe has also been adjusted to a positive value to give a bit more stability into corner entries.
- As seen on other tracks, a high wing configuration works well for the Audi, so low downforce setups have not been created. The safer variant keeps the car more planted through the downhill sections and provides better traction through slow speed corners, at the expense of some extra understeer.
- High wing setup used for many high speed corners.
- Fast Dampers tuned to give neutral to understeer reaction to kerbs to avoid any spinning through entry to the Degners.
- Softer springs and roll bars used to improve cornering and traction.
- Bumpstops short on the front to minimize pitch sensitivity, with longer bumpstops on the rear.
- Safe setup uses shorter front bumpstop, softer rear springs, and less aggressive roll bar settings to give a more predictable and stable handling car.
- Qualifying setup uses more aggressive settings suited to the lower fuel loads.
- The car has been softened quite a bit on the suspension settings, but still runs low enough bumpstop range to prevent too much roll in the higher speed sections.
- The front dampers are run stiff to help in maintaining roll control and also preventing the front suspension from being underdamped in the bumpier sections of the track.
- Tyre temperature management is always quite difficult at Zandvoort and the tyres sometimes end up being above 100 degrees celsius. Having done some tests it has been confirmed that the best way to control this is to run a slightly stiffer car. Although this seems counter intuitive, it is important to note that a soft car loads the car mechanically longer. Even though the grip improves, the tyres also heat up more since the car can be pushed closer to the limit. When this is done on a temperature prone track, it becomes an issue.
- However, having tested more it has been confirmed that this temperature level has minimal effect on performance currently, so a softer setup has been maintained to improve driveability.
- If temperature management becomes a concern in a longer endurance race, consider running a slightly stiffer ARB confrontation with the same ratio. Changing wheel rate settings is inadvisable as this would cause more pitch balancing problems.
- The starting point of this setup was Zandvoort, as both are circuits with similar characteristics of long speed corners. We realised the car lacked a bit of traction, so we ran the lowest rear wheel rate to ease this problem.
- In exchange for this, we increased the rear ARB, also to control the roll. With this change the car felt with better rotation, but we reverted the change in the safe setup to make it easier to control
- We reduced to 0.0 the rear toe to maximise the contact patch of the rear wheels and improve the traction in corner exit
- For the safe setup, it is advisable to increase the TC to 2, as it is in the setup. If it feels confident, you can reduce to TC1
- For the qualifying setup we increased the roll stiffness in the rear by a higher anti roll bar and lower bump stop range. This way it is faster in the corner entry and easier to attack the corners. The rotation also feels improved.
- The car can be quite sensitive to setup changes and given the varied nature of the track, compromises will need to be taken to maintain enough stability at high speed with traction and rotation at low speed.
- It is traction limited in general so you need to be careful to not be too aggressive with your throttle application.
- While the diff and rear toe can have a big effect on car balance and help solve any instability issues, the TC and ABS can be put higher for more confidence, however, for corner entry and exit.
- Stiffer roll bar combo is used to provide stable aero and easy entry coming into the old hairpin.
- Low rear bumpstop range provides less roll on the rear and therefore a more predictable handling. To maintain grip, the rate also has been lowered.
- On the back many settings are already used to provide a lot of grip so further adjustment could be done by stiffening the front.
- This track has a lot of long exits and as the car doesn’t provide a lot of rear traction it’s down to the driver to optimise them. All the rotation should be done on brakes or while coasting. When applying throttle on exit, your steering should be as straight as possible. “Slow in fast out” seems the optimal way.
- Raising the front arb gives a lot more control of rotation with your steering wheel. Soft front arb will require you to control the pitch of the car with the pedals.
- Positive rear toe doesn’t work to control oversteer as it creates more notchy. behaviour in the rear. Neutral toe allows the rotation with slight tire slip to be smooth.
- Lowering the preload increases the traction in low speed and also helps with rotating the car in the downhill section of sector 3.
- The car has very good clearance so you can cut the corkscrew a lot to gain some time.
- Rear bumpstop range has a lot of steps so it’s a good tool to fine tune the grip and rotation on power to one’s liking.
- Softening the front rebound helps make the transition between braking and going back on power easier (less oversteer).
- The track does not have many kerbs that can particularly unsettle the car despite having many small dips on the track surface. Hence the bumpstop ranges can be run a bit lower without risking hitting the bumpstops too hard.
- This also helps stabilise the car downhill through the long right hander.
- A stiffer front spring additionally helps in pitch control. The dampers have been stiffened on the front to match the stiffer front springs. The stiffer front rebound also maintains more weight on the front tyres.
- Since the entire car has been set up with pitch stability and rotation control in mind, the preload has also been increased. This will help in maintaining high speed rotation post apex without risking excess understeer.
- The rear traction is best to tune with rear bumpstops. Higher range and lower rate can both be utilised with no downsides to the car’s behaviour over kerbs.
- Adding more positive rear toe can help with oversteer during initial throttle applications on corner exits.
- It’s best to gain rotation by softening the front as the rear is already struggling to provide enough grip to rear wheels.
- To get easier transitions between braking and going on power, both fast and slow front rebounds should be softened together.
- RS setup runs extra front ride height to make cutting of the chicane less risky.
- In terms of driving style, going through the hairpins with a V line works best. Go a bit deeper into the corner and get a straighter exit. This will help control wheel spin in slow exits and tire temps crucial for overall grip.
- From many variations of bumpstops and wheel rates, the soft spring and low bumpstop range gave the most stability over the Ascari exit kerb. What seems to unsettle the car the most is holding too much steering input when attacking the sausage kerb so it’s necessary to get a tight line through the middle of Ascari.
- Raising the front for the RS setup helped the car with potential loss of control while exiting Ascari but a tight line is still needed to get a fast and clean run out of the corner.
- RF setup has a bit stiffer rear damper setup to eliminate roll and provide a lot of rotation on exits.
- Q setup has increased negative front toe to help with more aggressive entries but it makes the car prone to getting pulled to the inside by kerbs, especially in the last corner.
- We found that the maximum wing works best in this car, especially here.
- We set the softest spring to help drive the kerbs smoothly
- We found the car very unstable in the rear, so we set 63 mm of rake, which is quite low, but that way we have the turn in we want. In contrast, we set very stiff ARBs in the front and soft in the rear, to make it neutral in corner entry.
- Minimum toe in the rear to maximize traccion.
- For the safe setup, we put less rake and minimum rear ARB, with softer bump stop in the rear.
- It is highly recommended to run TC3 in qualifying but switch to TC2 in the hairpin.
- Stiffer bar at the rear to stabilise the rear.
- Little rake and high wing to have the car stable on the downhill.
- Negative toe-in for good turn-in in qualifying.
- Low bumpstops for good stability in high-speed turns
- The main focus for Snetterton has been to get the rear end grip out of slow speed corners as high as possible without compromising on the exit rotation, thereby trying to avoid understeer.
- The rear ride height has been increased to improve overall rotation and the traction issue has been fixed with the softer rear suspension.
- In order to maintain enough load on the front going out of fast corners, the front rebound damping has also been stiffened. This will help avoid initial understeer going out of corners.
- Due to this unique combination of settings and demanding nature of the track, the setup is quite agile in its balance on both setups. The safe setup is very similar in it’s balance and performance compared to the fast setup, but is more forgiving at the cost of slightly lower cornering speed.
- The car fundamentally requires good throttle control, more so in a track that has multiple harpins such as Snetterton. It also grips up quite well on the front tyres, so minimal steering inputs would be optimal.
- Suspension and dampers are tuned to help with the bumpy track and the kerbs.
- Stiffer roll bars are used to provide the agility needed in the high speed corners, with softer suspension providing the traction and grip at low speed.
- If traction on exits where the car has one side off the track on the astro turf is a major issue, adding some rear toe can help.
- High Downforce, medium rake used for best mix of rotation and stability with all the high speed corners.
- High caster with reasonably conservative alignment values used.
- Soft rear springs, shorter bumpstops, and reasonably stiff roll bars also used to add stability along with a reasonable strength preload, if you are experiencing entry oversteer, extra preload might be a good ‘quick fix’.
- Stiffer dampers to cope with kerbs and bumps.
- Safe setup uses higher front ride height to minimise impact on the kerbs and higher preload for more entry stability. Slight alignment changes were also made.
- Qualifying setup uses more aggressive roll bar and spring values, along with alignment changes to optimise 1 lap pace.
- Lower rear ranges are used for the necessary on power rotation with soft wheel rates and low bump dampers providing traction
- High front range gives the ability to use kerbs through the esses.
- Exit traction is challenging at Indy, therefore softer suspension is used for mechanical grip. Not too soft though as stability is needed for the quick change of direction in the middle sector
- If the car is too loose in qualy on exits, try adding some rear toe.
- Very stiff arbs and wheel-rate to increase turn-in stability.
- Low rake to maximise traction, as the car already has very good rotation.
- Rear bump on 0 helps a lot with stability under braking and in general the balance of the car.
- For the Quali setup, we raised the toe-in and raised the front bumpstops to have a more aggressive car, if the car is too aggressive you can use the RF setup even in qualifying.
Please note, sessions with no engineer shown were solo sessions:
|Barcelona||David Pertile||Nick Deeley|
|Imola||Amedeo Dekeyser||Miguel Jimenez|
|Kyalami||Amedeo Castorino||Saiduth Ramesh|
|Laguna Seca||Hubert Szymanski|
|Mount Panorama||Amedeo Castorino|
|Nurburgring||David Pertile||Nick Deeley|
|Paul Ricard||Hubert Szymanski||Saiduth Ramesh|
|Spa Francorchamps||David Pertile||Saiduth Ramesh|
|Suzuka||Amedeo Dekeyser||Rob Taplin|
|Zandvoort||David Pertile||Saiduth Ramesh|
|Zolder||Amedeo Dekeyser||Miguel Jimenez|
|Brands Hatch||Taariq Adam|
|Oulton Park||Taariq Adam|
|Snetterton||Hubert Szymanski||Saiduth Ramesh|
|Silverstone||Amedeo Castorino||Saiduth Ramesh|
|Watkins Glen||Luka Berk||Rob Taplin|