CALL it the Stoner effect: Melbourne is hungry for motorcycle racing. Extra grandstands and extended VIP areas will be built at the Phillip Island race track to cater for increased demand at this year's motorcycle grand prix as the performances of Australia's Casey Stoner create soaring interest in the sport. Organisers of the MotoGP events have been forced to increase grandstand capacity after selling out all seated tickets. With almost two months still to go before the October race, grandstand ticket sales are up 153 per cent from last year and have already outstripped the total number sold last year. The ticket rush comes after Stoner, the 21-year-old Gold Coast native, has dominated the sport this year — relegating Italian superstar Valentino Rossi to second position and racing to a commanding lead in the overall championship. Stoner, who began riding a motorcycle at the age of three and won his first national championship just three years later, has collected six victories and two more podium finishes for his Ducati team from 11 races this year. Adding to the local hype, Suzuki rider and fellow Queenslander Chris Vermeulen has been a regular on the podium and is fourth in the world championship standings. For the past five years, Rossi has been the high-profile marketing face of the Phillip Island event but this year promotional materials have instead featured the two Australians. Television ratings also tell the story of a sport that is enjoying something of a Stoner-led renaissance. Broadcaster Fox Sports says ratings for the MotoGP races are up more than 7 per cent on last year. Because of the increased interest, all four temporary grandstands at the island circuit will be expanded, increasing the number of grandstand seats by almost 40 per cent. Sales of VIP and corporate tickets have also already exceeded the total sales from last year and a new VIP area — to be called The Red Line — will be built to house the extra patrons. The facility will offer corporate dining and an outdoor seating area, television screens to watch the racing as well as free parking. General admission tickets still account for the bulk of the attendance and growth there has also been astounding, according to race organisers. Sales are up 171 per cent on the same time last year. Most general admission tickets are sold in the days leading up to the race and it is possible that the fans are merely getting in earlier this year. But race organisers say they are expecting a monster crowd. Last year, the three-day event drew 93,531 people, a substantial increase on 2005. The highest attendance since the race returned to Victoria 10 years ago was in 1998 when there were 103,700 spectators present. "There's no doubt that the performance of Stoner and Vermeulen is having a big impact on ticket sales for this year's race," said Drew Ward, chief executive of the Australian Grand Prix Corporation. "With Casey leading the world championship and Chris in fourth place, we're seeing the emergence of another golden era in Australian motorcycling and this is translating into strong interest from people across the country. Not since the glory days of (Michael) Doohan and (Wayne) Gardner has there been so much hype around the Australian Grand Prix."