Within the FIA World Rally Championship (WRC) series which is the pinnacle of rallying, there is a subcategory for slightly modified production cars known as Group N. It is the FIA Production car World Rally Championship (P-WRC).
P-WRC events are run parallel to WRC events on the same format, but it is only eight rounds from the WRC's sixteen round calendar that P-WRC events are paired with. Furthermore, each P-WRC crew must declare six events in which they participate from those eight rounds in advance. They can earn their championship points in those six events only.
Compared to World Rally Cars, permitted modifications to Group N cars are so strictly limited that they are virtually identical to commercially available street legal version of the same model. This means that the competitiveness of a model depends largely on the performance potential of its street version. Therefore, in recent years, this category has been dominated by two Japanese technically advanced all wheel drive performance cars, namely the Mitsubishi Lancer Evolution and the Subaru Impreza.
Each round basically consists of three days; Leg 1 on Friday, Leg 2 on Saturday and Leg 3 on Sunday when the competition concludes. Some events also have the ceremonial start normally in the centre of the host town on Thursday, sometimes followed by a Super Special Stage on the same day.
The scale of a P-WRC event is much larger than that of a Japanese domestic rally event and its total competitive distance is more than 300km, with a total running distance well beyond 1,000km. Moreover, required average speed is much higher than that in Japanese domestic events, which means quite high levels of durability are asked for Group N cars that are virtually identical with their road going versions. Then, the natural terrains P-WRC events are run on differ from snow and ice in northern extreme to high altitude mountainous area in parching heat right on the equator.
The world motor sport governing body, FIA (Federation internationale de
l'automobile) grants its world championship titles to only three categories;
WRC, which includes P-WRC, FIA World Touring Car Championship (WTCC) and
FIA Formula One World Championship (F1). ADVAN provides single spec tires
for WTCC as the official tire supplier and, in P-WRC, ADVAN-PIAA Lancer
won three events in the 2006 season. Therefore it can be said that P-WRC
is one of the most important aspects of ADVAN's global motor sport activities.