29. Supply Of Tyres And Tyre Limitations During The Event¶

29.1. Tyre Supply¶

Only tyres from Pirelli, approved and registered by the Promoter and sold at a GT Challenge Asia Series event, will be accepted. Tyres must be ordered by the deadlines set by Pirelli, and paid for in advance, failing which tyres may not be supplied.

Drivers are required to sign the 'Acknowledgement of Risks' form issued by Pirelli before the first time they compete in the Series. A new form must be signed should a driver change Teams. On entering the Series, Teams are required to sign and return the 'Supply Agreement with Teams' issued by Pirelli.

All tyres must be used as supplied at Series Events by the tyre Manufacturer specified by the Promoter. They must comply with the specifications determined by Article 29.2. Any chemical and/or mechanical treatment of the tyres is prohibited. The original tyre tread and profile must not be modified or cut. Modification to marking, reference, information written on the tyre or any traceability means is forbidden. This includes the barcode, Manufacturer serial number, type of tyre, dimensions and any other relevant items.

Teams are highly recommended to adhere to the limits detailed in the technical booklet issued by Pirelli and received from the Promoter before the first official Event, as well as to any other Technical Bulletins received during the season.

The Organisers reserve the right to take samples of the tyre material at any time for laboratory analysis.

A new tyre is a tyre that has not been previously registered and/or allocated to a car. A set of tyres must comprise two front tyres and two rear tyres.

29.2. Dry and Wet weather tyres¶

Dry-weather tyres: only tyres with no tread pattern are accepted as dry-weather tyres.

Wet-weather tyres: a wet-weather tyre is a tyre which is designed for use on a wet track, and is grooved more than 30% symmetrically around the tyre centre-line and covering a square:

Tyre width:

9 inches 180 x 180 mm
10 inches 200 x 200 mm
11 inches 230 x 230 mm
12 inches 250 x 250 mm
13 inches 280 x 280 mm
14 inches 300 x 300 mm
15 inches 320 x 320 mm
16 inches 345 x 345 mm

Pirelli must provide the Promoter with a 1:1 scale legality drawing of the profile they wish to use. This profile must be registered with the Promoter and will be the only one authorised throughout the season.

29.3. Control of tyres¶

The control of the tyres will be carried out according to a process defined by the Promoter.
The outer sidewall of all tyres which are to be used at a Competition must be marked with a unique identification.
Other than in cases of force majeure (accepted as such by the Stewards of the Meeting), the barcode list of all dry-weather tyres intended for use at an Event must be presented to the Technical Delegate prior to the end of initial Scrutineering.
A used tyre is one that has been registered for a previous Competition with the same car number. For race-by-race Competitors, this is considered to be any previous event in which the car was entered. Used tyres must be presented to the tyre manufacturer for checking and re-registration following the process defined by the Promoter and the Tyre Manufacturer. Pirelli maintains a list of the tyres which have been recorded during the season. Used tyres must be taken to Pirelli for re-registration before any new tyres are fitted.
The use of tyres without appropriate identification is strictly forbidden during the whole Competition.
Any marking applied by Pirelli on the tyres must not be removed by the team.
Note that modifications to the tyres are prohibited by the sporting and technical regulations. Tyres must not be subject to any large deformation or impact. Pirelli would also like to inform all Competitors that purging, as shown in Appendix 17, is strictly forbidden.

29.4. Tyre-heating devices¶

Tyres heating prior to use is not permitted.

The application of any material (liquid, solid or gas) to any part(s) of the tyre is forbidden.

Heat retention devices and compounds are forbidden at any time. The only exceptions are the use of domestic water / detergents for cleaning purposes and lubricants applied to the tyre bead for fitting purposes.

29.5. Joker Tyres¶

Four additional Joker tyres per car will be permitted per season. These will only be available as replacements for tyres nominated for the event and damaged beyond use. This must be agreed with the Series Eligibility Scrutineer before they are used. Application for Joker tyres should be made in writing using the official joker tyre form.

29.6. Change of Chassis & Car Number¶

Should a car change race number during the season but remain with the same Competitor, the used tyres will be transferred to the new race number
Should a Competitor change the model of car during the season so that the used tyres are no longer suitable, then the car will be treated as a new Competitor in terms of tyres. However, if the Competitor then reverts to the old model, the previously used tyres must be used.
Should a car be transferred between Competitors, the new Competitor may choose either to retain the used tyres or to be considered as a new Competitor.

29.7. Tyre Limitations¶

For the first meeting entered, the following sets of new tyres may be purchased and used throughout the meeting:

GT3 and GTC and GT2: 5 sets of dry-weather tyres

GT4: 4 sets of dry-weather tyres

If a third race is added to a race weekend, tyre allocation will be adjusted via Bulletin or Sporting Note

For subsequent meetings, the following applies, except where specifically authorized by the Organiser:

GT3, GT2 and GTC: a maximum of 4 sets of new tyres may be purchased to be used throughout the meeting. Two additional sets nominated at a previous round of the GT Challenge Asia may additionally be registered for use before Qualifying

GT4: a maximum of 3 sets of new tyres may be purchased to be used throughout the meeting. Two additional sets nominated at a previous round of the GT Challenge Asia may additionally be registered for use before Qualifying.

Bronze Tyres: For cars including a Bronze driver, an additional set of new tyres may be purchased at every meeting to be used before Qualifying. This set cannot be used for the rest of the meeting, but can be it may be used as S5 or S6 at subsequent Events

All quantities given are the maximum. Competitors do not have to take all the possible tyres.

Tyre allocation over the race weekends from testing may be adjusted.

Penalty for non-compliance -- Competitor will start the race or subsequent race from the back of the grid and may be fined up to $5,000

The unique reference numbers/barcode on the nominated tyres for each car will be recorded either by tyre marking, on a Series form or by electronic means in the tyre supplier's work area by the Eligibility Scrutineer or his nominated representative. The onus is on the Entrant to ensure that all nominated tyres have been recorded in accordance with the Series issued procedure.

The tyres nominated for an event can be used in any combination provided that there is compliance with all other Series regulations and relevant technical forms.

29.8. N/A¶

29.9. N/A¶

29.10. N/A¶

29.11. Tyre Limitations for Wet Weather Tyres¶

Tyres supplied specifically for use in wet weather will not be subject to the limits given in ~~articles 29.7 and 29.8.~~ Article 29.7.

No intermediate tyres will be available/supplied and their use is forbidden.

It is not permitted to use tyres supplied specifically for use in wet weather on dry tracks during official timed sessions. For the avoidance of doubt any official track session deemed to be "wet" in the sole opinion of the Race Director will be indicated to competitors by the display of a "Wet" board at the Pit Lane exit or by being displayed on the timing display screens. With the exception of races, wet weather tyres may ONLY be used after track has been declared wet by Race Director.

Wet-weather tyres will not be marked and there is no limit on how many of them may be used.

In all cases, any infractions will be penalised by the Stewards.

29.12.1. Camber¶

For all Competitions, the maximum negative value for the camber of both rear wheels of the car may be monitored in static condition anytime during the Event, including in Parc Fermé after qualifying and the race(s), and must not exceed -3.5°.

This figure may be altered for any race, in particular should there be any changes to the circuit configuration. Any such changes will be announced before the Event but values may be further modified by Stewards' Bulletin during an Event.

Any car failing to abide by these values will be reported to the Stewards, who will give any available sporting penalty, including a stop-and-go penalty to be taken at the start of the next session, deletion of qualifying laps or a time penalty after a race.

ic condition at any time during the Event, including in Parc Fermé after qualifying and the race(s), and must not exceed -3.5 degrees (subject to any change notified by Bulletin.)

The starting pressure of the tyres must be a minimum of 1.30 bar (subject to any change notified by Bulletin).

The pressures will be monitored, with random checks being made on the grid by nominated Officials. Any car which does not reach the minimum starting pressure to the satisfaction of the Officials present will be immediately reported to the Race Director. The Race Director will order via the timing monitors and/or radio, any such car, to return to its working area in the pit lane at the end of the formation lap to remedy the situation. Once the tyre pressures have been checked in the presence of a Pirelli engineer or Technical Scrutineer, the car may join the race.

Should the car fail to return to the pit lane before starting the race, the Race Director will show the car a black and orange 'mechanical' flag and the car must immediately return to its working area in the pit lane. Once the tyre pressures have been checked in the presence of a Pirelli engineer or Technical Scrutineer, the car may rejoin the race. The Race Director will also report the car to the Stewards, who may impose any available sporting penalty for the failure to comply with the Race Director's initial instruction to return to the working area before starting the race.

c) For all cars: any car failing to abide by these values will be reported to the Stewards, who will give any available sporting penalty, including a stop-and-go penalty to be taken at the start of the next session, deletion of lap times during qualifying or a time penalty after a race.

d) For all cars, values for the Maximum Camber and Minimum Pressure of tires may be issued or modified during any Event and monitored at any time.