BANBURY'S Subaru World Rally Team will travel west to the Americas for the third event of the season, the Corona Rally Mexico, after its late inclusion in this year's WRC calendar.

The first traditional gravel rally of the year, which runs from February 29 to March 2, is also the first long-haul event, and the only time the crews will visit the North American continent.

The event promises very different conditions to any seen so far this year in either Monte Carlo or Sweden. On the event where the Impreza WRC2007 was launched last year, crews will compete for the first time on Pirelli's new Scorpion gravel championship control tyre, available in only one compound and tread pattern. It will be the third different tyre design crews have used in the first three events of the year.

Crews are banned from cutting the tread of their tyres this year, which on gravel typically meant opening up the tread pattern to maximise the tyre's ability to cut through the loose surface. This will mean road position is crucial as those further down the order will benefit from road cleaning, meaning a smoothing of the loose surface that will afford the standard tread better traction.

Subaru are entering two cars for Norwegian Petter Solberg and Australian Chris Atkinson.

David Richards, Subaru World Rally Team principal, said: "Mexico is a totally different challenge to that we have seen so far this year. It's an event on which Subaru have a good record, and it really demonstrates the strength of our engine.

"Petter and Chris ran strongly on this event last year and, using the same car that we debuted then, I expect our performance to put us firmly towards the top of the timesheets."

Paul Howarth, Subaru World Rally Team operations director, said: "We've gone well in Mexico in the past and the conditions suit both drivers and our cars. Recent tests with Pirelli's new Scorpion tyre have been positive, but have shown that tyre wear will be a real factor in what we consider to be an endurance event.

"The stages will be a lot cleaner for the second passes and road position is important. You will lose time starting first on the road as for those further back there will be more grip as the surface becomes cleaner. The roads do get very abrasive though as the loose surface is swept away, and as grip increases, the tyres have to really work hard."

The region's hard-packed gravel roads are some of the highest of the year. Generally fast, they are tricky as they don't naturally flow through the mountainous terrain. The challenging combination of high and slow-speed sections make it difficult for crews to establish a rhythm along the sometimes narrow and technical tests. Those who are smoothest will improve the life and therefore grip from their tyres on the abrasive surface where tyre wear is very high.

These conditions traditionally suit Subaru very well, and Petter Solberg and Phil Mills won here in 2005 and established an early lead last year before being forced into retirement. Chris Atkinson also held second position last year before running into difficulty and finishing fifth.

The route is much the same as last year with only minor additions to sections of the Ortega and El Cubilete speed tests. Rally Mexico is the most compact route in the WRC, and this year is even more so than last with a total distance of just 830 kilometres. The 354 competitive kilometres of gravel roads traverse the mountains of the Sierra de Lobos and Sierra de Guanajuato to the east of Leon, reaching a peak altitude of just over 2700 metres where the oxygen is thin and engines struggle to develop power.

The event opens with a ceremonial start on Thursday night in front of the Alhondiga de Granaditas, an historic grain storage building which now serves as a regional museum. A change from the first two events, the weather forecast is dry and windy, with temperatures reaching 25 degrees Celsius. Each day is concluded by a 2.21km spectator stage, located 15km south-west of Leon, which will be run a total of five times over the three days to bring the action from the mountains to the local fans.

After the Swedish Rally both Impreza WRC2007s travelled straight to Spain for a four-day gravel test ahead of Rally Mexico. The duo of Solberg and Mills completed two and a half days, and the pairing of Atkinson and Prévot completed one and a half days to develop a setup for Mexico and the remaining gravel rallies and to test Pirelli's new gravel tyre. The team also tested suspension and damper components in what was the final test for the WRC2007 as the emphasis shifts to the Impreza WRC2008.