SUPER GT clamps down on extreme GT300 pit tactics

For next weekend's fourth round of the season at Fuji, the pit window will open at the end of the fifth lap, meaning that a car cannot complete either of its two mandatory refuelling stops before this time.

This appears to be a reaction to the two most recent races at Fuji and Suzuka, in which some cars in the GT300 class were able to gain an advantage by pitting on the first or second lap of the race and then circulating in clean air before pitting again around the halfway stage.