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MotoGP : Changes to the 2009 regulations
The tyres restrictions in detail
The Grand Prix Commission, composed of Messrs. Carmelo Ezpeleta (Dorna, Chairman), Claude Danis (FIM), Hervι Poncharal (IRTA) and Takanao Tsubouchi (MSMA), in the presence of M. Paul Butler (Secretary of the meeting), in a meeting held on
9 December at Barcelona, unanimously decided to introduce various changes to the FIM Road Racing World Championship Grand Prix Regulations, for the 2009 season.

Some important ones concern the tyre restrictions for MotoGP, during Grand Prix events and official testing. They are as follow :

‘2.9.1 In the MotoGP class, only tyres from the official appointed tyre supplier may be used in a Grand Prix event, including official MotoGP tests.
The official tyre supplier will provide sufficient tyres for all riders entered in the event.
The tyre specifications available at each event will be determined by the tyre supplier. Identical tyres of each specification must be available to every rider, and the allocated quantities of each specification of tyre will be the same for every rider.

2.9.2 On the day prior to the start of official practice, the tyre supplier must provide to the Technical Director details including specifications, quantities and the identification markings of the tyres available for that event.
The Technical Director and staff will allocate the tyres available for the exclusive use of each entered rider (as described in Article 2.9.3). The allocation of individual tyres will be made on a random basis with no involvement of any representative from the tyre supplier, teams or riders.
This allocation should be completed by 12.
00 hrs of the same day and no further allocation of tyres is allowed after 17.00 hrs. on the day prior to the start of official practice (except under Art. 2.9.7 or 2.9.8).
In the case of a rider change after the tyre allocation has been made, the replacement rider must use only the tyres allocated to the original rider.

2.9.3 For Grand Prix race events, each rider will be restricted in the quantity and specification of tyres that they may use at a single race event as follows: During all practice sessions, warm up and the race a maximum of 20 slick tyres, Specifically:
Front slick tyres: 4 of Specification “A” + 4 of Specification “B” = 8 in total
Rear slick tyres: 6 of Specification “A” + 6 of Specification “B” = 12 in total

During all practice sessions, warm up and the race a maximum of 8 wet tyres, Specifically:
Front wet tyres: 4 of the standard specification
Rear wet tyres: 4 of the standard specification

The tyre supplier may allocate 1 extra set (1 front + 1 rear) of wet tyres to every rider, should this be deemed necessary by Race Direction due to weather conditions at the event. Specifically in the case of every practice session being fully wet, requiring the use of wet tyres, 1 extra set of wet tyres will be allocated to every rider for the race.

A wet tyre is defined as a tyre which has a land to sea ratio of at least 20% overall, and a minimum ratio of 7% in each third of the section profile. The tyre may be moulded or hand cut, but each groove must have a minimum depth of three millimetres over 90% of its length. Any tyre with a land to sea ratio of less than 20% will be deemed a slick tyre and therefore must be part of the rider's slick tyre allocation. In case of dispute the decision of the Technical Director will be final.

2.9.4 1) Riders may use only the tyres allocated for his/her exclusive use (as described in Article 2.9.3).
2) Tyres will be individually identified and may not be exchanged between riders, including between team-mates, and may not be exchanged by the tyre supplier after allocation, except with the permission of the Technical Director (for example, under Article 2.9.8).

3) Tyres may not be materially altered in any way after allocation, such as handcutting and any other action or treatment that will alter the tyre's performance (with the exception of the use of tyre warmers), unless deemed necessary by the tyre supplier. Such alterations may be performed only by the tyre supplier, and shall be made equally for all riders.

2.9.5 Each allocated tyre must be marked with it's specification and carry an official identification label with a unique serial number. In the event of damage to or loss of the official label, the tyre company must be able to satisfy the Technical Director as to the tyre's specification. Tyres may be checked for compliance at any time, before or after use.

2.9.6 In the case of an interrupted race, a rider must use tyres from his allocation of marked tyres for the restarted race.

2.9.7 In the unlikely event of a tyre being accidentally damaged before it is used (for example during the fitting process) and deemed to be unusable by the Technical Director, it may be replaced with a tyre of the same specification with the permission of the Technical Director. Such replacement tyres will be marked and included in the allocation of the rider concerned. The damaged tyre will be removed from the allocation and may not be allocated again.

2.9.8 Should an exceptional and unpredictable safety problem arise for the tyre supplier during an event, so as to prevent riders from safely competing in the race, then the tyre supplier must inform the Technical Director and Race Direction of the problem as soon as possible.

A re-allocation of suitable tyres may be made under the supervision of the Technical Director. Such allocated tyres will be the same specification(s) and quantities for all riders, the quantity being determined by the tyre supplier in consultation with the Technical Director.

2.9.9
1) For official Post-Race tests of 1 day duration, each rider will be restricted in the quantity and specification of tyres that they may use at a single test event as follows:
During all practice sessions, a maximum of 8 slick tyres, specifically:
Front slick tyres: 2 of Specification “A” + 2 of Specification “B” = 4 in total
Rear slick tyres: 2 of Specification “A” + 2 of Specification “B” = 4 in total

During all practice sessions, a maximum of 4 wet tyres, specifically:
Front wet tyres: 2 of the standard specification
Rear wet tyres: 2 of the standard specification

2) For official Winter tests of 2 days (or more) duration, each rider will be restricted in the quantity and specification of tyres that they may use at a single test event as follows:
During all practice sessions on Day 1, a maximum of 8 slick tyres, specifically:
Front slick tyres: 2 of Specification “A” + 2 of Specification “B” = 4 in total
Rear slick tyres: 2 of Specification “A” + 2 of Specification “B” = 4 in total

During all practice sessions on each additional day, a maximum of 6 slick tyres, specifically:
Front slick tyres: 3 tyres out of the 2 specifications “A” and “B” = 3 in total
Rear slick tyres: 3 tyres out of the 2 specifications “A” and “B” = 3 in total

During all practice sessions over the 2 (or more) days of the test, a maximum of 4 wet tyres per day, up to a maximum total of 8 wet tyres, specifically:
Front wet tyres: 4 of the standard specification, (maximum of 2 per day)
Rear wet tyres: 4 of the standard specification, (maximum of 2 per day)

3) At any official Post-race or Winter test, the tyre supplier may choose to allocate extra tyre sets with a different specification. Such extra allocation will be determined solely by the tyre supplier.

The same quantity of identical specification tyres will be allocated to at least all permanent MotoGP class riders contracted to factory teams at the test.
When a new specification tyre is to be introduced, the tyre supplier should inform all teams at least two months in advance of the proposed test date for the new specification.'




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