UPDATE issued after the wet morning warm-up session had been completed:

"IN THE CASE OF THE RACE STARTING IN DRY CONDITIONS

"Riders must change bikes at the end of their 9th. 10th. or 11th. lap. For the avoidance of misunderstanding the rider can enter the pits after he has actually started his 9th. lap and must do so before he starts his 12th. lap.

"If rain starts and Race Direction consider the situation to be dangerous the red flag will be shown and all riders should enter pit lane. If 13 laps have been completed by all active riders then the race will be declared finished and full points will be awarded.

"If the race is interrupted before 13 laps have been completed then teams will be given a minimum of 15 minutes between the display of the red flag and opening of pit lane to make adjustments to the machines. The pit lane will be open for five minutes as normal and riders may make more than one sighting lap.

"The second part of the race will be for the number of laps required to complete the original number of 20 laps but, due to tyre constraints, with a maximum of 10 laps.

"Grid positions will be based on the result of the first part, providing more than three laps were completed, and the race will be declared a wet race.

"IN THE CASE OF THE RACE STARTING IN WET CONDITIONS

"Riders may enter the pits to change machines only from the end of their 9th. lap. For the avoidance of misunderstanding the rider can enter the pits after he has actually started his 9th. lap. (There is no obligation to change machines).

"If the wet race is red flagged for other reasons when more than 13 laps have been completed then the result will stand and there will be no restart.
"Race Direction"

Original story:

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Following the replacement of the previous Michelins rear tyres with a new stiffer slick for race day in Argentina - then the arrival of wet weather on Sunday morning, the following will now occur:

"The warm-up starting at 10:40 will now be for 30 minutes, finishing at 11:10. This will apply whether the track is dry or wet.

"If the track is dry for the warm-up riders should use the replacement rear tyre (Option Tyre).

"If the track is wet for the warm-up then the plan to provide extra practice sessions with the Option tyre is cancelled and the race will be held using the tyres from the original allocation.

RACE

"If the race starts in dry conditions if the warm-up has been dry then riders must start with the Option tyre and the race will be for the full 25 laps. The normal flag to flag conditions will apply if the track becomes wet.

"If the race starts in dry conditions when the warm-up has been wet then riders may use either of the rear slick tyres (Medium & Hard of their allocation for Argentina). However, the race will be "flag to flag" for 20 laps with a compulsory stop to change machines at the end of lap 9, 10 or 11.

"If the race starts in the wet and the track dries then Race Direction will decide if it is unsafe for the riders to continue in which case the race will be red flagged. The new "dry" race will then be restarted for ten laps with a 15 minute start procedure. Should the track become wet during this race the riders may change machines as normal.

"If the race starts in wet conditions and remains wet then the race will be for the normal 25 laps.

"Under no conditions will the use of intermediate tyres be permitted.

"Race Direction"

The slick tyre change was announced following a failure for Scott Redding in final practice.

At present it looks like the MotoGP warm-up will be wet. The simplest thing would be if the track now remains wet throughout the day...

By Peter McLaren