DTM
Audi: Proven technology, new tires
DTM countdown
Edited: Apr 15, 2011, 2:32 AM
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Only two weeks before the DTM opener
The spectacular Hankook Tire girls
Photo by: Eric Gilbert
Million seller Audi A4 also successful on the race track
A4 DTM runs for first time on Hankook tires
While Audi produced the fifth million A4 several days ago, the new season begins for its victorious brother in racing. At Hockenheim on May 1 the A4 DTM rolls to the grid with proven technology, but with new tires.
2011 is the fourth and final year of racing for the current A4 DTM originally developed by Audi Sport for the 2008 season under the project name “R14.” The car evolved to become the “R14 plus” in 2009 after a technical update. Both model versions are in action again this year, since DTM car technology is frozen since August 2009. Further developments are prohibited.
While Audi Sport works feverishly in Ingolstadt and Neckarsulm on the internally labeled “R17” successor complying with the new regulations valid from 2012, the technicians face a completely different challenge for the 2011 season: They have to adapt the A4 as well as possible to the tires of new DTM exclusive supplier Hankook, without being able to change the car’s basic technology.
Audi suffered painfully last season through the significance of the tire’s impact in the DTM. The new design of the former supplier did not harmonize with the A4 DTM. The Audi drivers complained about the lack of “feedback” from the front axle and the rear tires could not be stressed as in the previous years. “Our hands were tied since the technology is frozen,” remembers Head of Audi Motorsport Dr. Wolfgang Ullrich uneasily of the 2010 season in which Audi could only win two races after taking three successive DTM championship titles.
The Audi Sport technicians were justifiably sensitive when in the DTM – just like in Formula 1 – a change of tire supplier appeared on the agenda. During joint development tests with the new Korean partner, the primary aim of all parties involved was to configure a tire for the 2011 season which disadvantaged none of the competing manufacturers – despite the technology freeze.
Previous test results appear to confirm this goal. “We have to applaud Hankook,” says Mattias Ekström, DTM Champion in 2004 and 2007. “The company has designed and produced a tire for the first time for demanding DTM race cars like our A4 DTM. The tire works very well. Hankook deserve a big compliment.”
Ekström gives good grades for both a fast lap and race distance: “The tire functions immediately on the first lap in qualifying. In the race we expect excellent durability, which is why in my opinion the races will be even more exciting. I think the field will stay much closer together for much longer.”
As before in the DTM there is only one tire type for dry conditions, the so-called “slicks”, and another type for rain. During the pre-season tests the main goal for the Audi Sport teams Abt Sportsline, Phoenix and Rosberg was to develop the best possible set-up for qualifying and the race with the new tire – because in view of the extremely close levels of performance in the DTM optimal use of the tire is the key to success.
A stony silence exists among the teams and Audi Sport regarding the knowledge gained over the last few months. Nobody is willing to show their hand before the season starts. Only so much: “You have to set the car up differently and adapt your driving style,” says Mattias Ekström. “I’ve managed this very well up to now.”
His team mates’ assessments are similar. If they prove correct then the DTM fans can look forward to an exciting and close season in which the tires form the foundation for close competition.
-source: audi
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