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Supercars decided to equalize the center of gravity of its competing vehicles, immediately endorsing the modifications made to the ballast of the Ford Mustang and Holden Commodore.
The COG test of 10 cars took place after the last race at Albert Park, where the new Mustangs extended their run of undefeated victories and ARMOR ALL Poles to six.
Although still meeting the minimum weight required by Supercars, the Mustang was designed to carry much more ballast than the Falcon it replaced.
Placing the low ballast in a car reduces its COG height, thus theoretically improving turnability.
Although the magnitudes were not revealed, Supercars confirmed that the tests had proven that the Mustang and Commodore both had a COG advantage over the Nissan Altimas.
The Mustangs and Commodores will therefore work with the Symmons Plains fitted ballast, placed higher up in the cars to raise their COG to match that of the Nissan.
Ballast repositioning work was undertaken by the Supercars technical department alongside the DJR Team Penske, Triple Eight and Kelly Racing homologation teams.
All Mustang and Commodore riders must adhere to the same repositioning requirements for their respective models, in accordance with Supercars technical parity ethics.
The changes have been approved by the Supercars Board of Directors today and will be applied to the Tyrepower Tasmania SuperSprint next weekend.
Supercars chief executive officer Sean Seamer said that although the Mustang has been certified according to regulations, the change would ensure that the COG is equal for all models.
"The success of Supercars is based on proximity and the spirit of competition. Like the ZB before it, the Mustang has advanced construction techniques and technologies, "he said.
"The three homologated vehicles were built in the rules.
"The Supercars championship is based on technical parity. That is, the sport seeks to minimize technical differences between vehicle models in a spirit of fair competition.
"I congratulate the manufacturers, the homologation teams and the Commission for their positive approach to technical parity on all models."
Complete statement from Supercars explaining COG changes
The Supercars championship is based on a technical parity. That is, the sport seeks to minimize technical differences between vehicle models in a spirit of fair competition.
Supercars does not seek sports parity, which aims to equalize the abilities of drivers and / or participating teams.
It is important to note that the constitution of Supercars includes the principle that incoming models must meet incumbents.
The aim is to ensure that these new models do not unduly increase the costs borne by current teams to ensure technical parity.
It's this principle that has been the cornerstone of Supercars' success: it's the best door-to-door race in the world, with cars competing in less than tenths of a second.
For this reason, Supercars as a series and the teams involved must do their best to manage and maintain technical parity as much as possible.
Each year, construction methods and materials used in the development of Supercars evolve.
Logically, each new car brings a series of developments and changes. With these changes, which are in the rules, technical differences between models can occur.
The most recent example is the introduction of the Ford Mustang, the first two-door car to enter the series.
Similarly, the introduction of the ZB Commodore in 2018 has resulted in new methods and new materials.
During the presentation of the Mustang in Adelaide, the Supercars technical service recorded a significant increase in ballast compared to the previous model, the Ford Falcon.
In order to ensure that the competing teams have no technical advantage, the Technical Service, at the Commission's instruction, carried out center of gravity tests on 18 and 19 March in Melbourne.
The test results show that the Commodore and Mustang had the advantage of the center of gravity on the Altima.
These results have been reviewed by the Commission and the approval teams, as well as by measures to ensure proper ballasting of Commodore and Mustang to maintain technical parity.
The same changes are made to all models. That is, there is no change in relative performance between teams using the same vehicle model, but only an adjustment of the technical differences between the models in accordance with the constitution of Supercars.
The proposal has been approved by the Supercars Commission and the modifications will be implemented for Tasmania.
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