Skip to content

Pirelli admit they “underestimated” effect of tire swapping

Jul 6, 2013, 7:00 AM EDT

Germany F1 GP Auto Racing AP

Pirelli’s motorsport director Paul Hembery has admitted that the Italian tire supplier underestimated the effect of allowing teams to undertake ‘tire swapping’ at the last race, believing that this was the biggest factor in causing the multiple failures at the British Grand Prix.

Lewis Hamilton, Felipe Massa, Jean-Eric Vergne, Sergio Perez and Esteban Gutierrez all suffered from blowouts during the race at Silverstone, triggering Pirelli to make changes for this weekend’s race. Hembery has admitted that it was a mistake by Pirelli which caused the madness to ensue.

“Just to recap, at Silverstone we’d underestimated the impact of swapping the tires,” Hembery said in the Friday press conference. “The cars were two, maybe three seconds quicker this year. Whilst we’d allowed the teams to do that, we’d underestimated the impact on the tire.”

Teams have been permitted to switch which side of the car they run the Pirelli tires on – i.e. using the front-left tire on the front-right of the car – and it has aided tire management, reducing wear in places. However, Hembery explained how this has caused a weakness in the tire which was evident at Silverstone.

“When you swap them around that creates a point with the metallic belt that we have on it, on the left hand side, the camber side, and that created the weakness.We got that wrong and we needed to get it right going forward.”

As a result, Pirelli have changed the structure of the tire, using a kevlar belt in the tire before reverting to the 2012 constructions for the Hungarian Grand Prix at the end of this month. The process of tire swapping has been banned for this weekend by the FIA following guidance from Pirelli.

Latest Posts
  1. Mardenborough set for GP2 debut at Monza with Carlin this weekend

    Sep 2, 2015, 2:36 PM EDT

    Photo: NISMO Photo: NISMO

    Jann Mardenborough steps up from GP3 into GP2 this weekend.

  2. James Hinchcliffe describes how inspired he was by Justin Wilson

    Sep 2, 2015, 1:00 PM EDT

    Hinchjw AP

    Hinchcliffe recalls racing, commentating on Justin Wilson.

  3. NHRA: Leah Pritchett climbing mountains as she continues to grow career

    Sep 2, 2015, 12:26 PM EDT

    All Photos: Gumout/Dote Racing All Photos: Gumout/Dote Racing

    Leah Pritchett looks to make her mark even more in NHRA Top Fuel, going into U.S. Nationals.

  4. Dixon: “I don’t think anybody had a stellar season”

    Sep 2, 2015, 11:22 AM EDT

    DixonJPM AP

    Dixon offers a rebuttal to Montoya’s dig about a “poor” season.

  5. Hulkenberg: Force India recovery influenced new deal

    Sep 2, 2015, 9:17 AM EDT

    xxxx during qualifying for the Formula One Grand Prix of Belgium at Circuit de Spa-Francorchamps on August 22, 2015 in Spa, Belgium. Getty Images

    Hulkenberg reveals he held talks with Haas F1 Team about a seat for 2016 before opting to remain with Force India.

  6. Takuma Sato ends 2015 on a good note

    Sep 1, 2015, 6:37 PM EDT

    (Photo courtesy TakumaSato.com) (Photo courtesy TakumaSato.com)

    Sato improved four spots in the driver standings over his 2014 result.

  7. Ryan Briscoe finishes short 2015 season with top-five finish

    Sep 1, 2015, 5:25 PM EDT

    Firestone 600 - Practice Getty Images

    Substituting for James Hinchcliffe, Briscoe ended his abridged 2015 with his first top-five finish of the year.

  8. Report: Derrick Walker reflects on IndyCar tenure and future

    Sep 1, 2015, 4:07 PM EDT

    DerrickWalker2

    Walker spoke with racing journalist Gordon Kirby about his two years in charge of competition and operations.

  9. Social Roundup: IndyCar season-ending banquet

    Sep 1, 2015, 2:00 PM EDT

    © INDYCAR © INDYCAR

    A look at the festivities held in San Francisco on Monday night.

  10. Reports: IndyCar’s testing plans for Road America, updates for road course

    Sep 1, 2015, 1:07 PM EDT

    Generac Grand Prix Getty Images

    Track president George Bruggenthies provided details on what to expect at the track next June.

  11. Hulkenberg extends contract with Force India for two more years

    Sep 1, 2015, 9:19 AM EDT

    HulkLaunch15 Getty Images

    Hulkenberg announces two-year extension with Force India F1.

  12. Ten with Townsend: Sonoma and 2015 IndyCar debrief

    Sep 1, 2015, 9:00 AM EDT

    dixonconfetti Getty Images

    NBCSN’s Townsend Bell checks in for the final IndyCar installment of “Ten with Townsend” for 2015, after Sonoma.

  13. Dixon’s latest title a story of consistency, comeback, typical “Ice Man” cool

    Aug 31, 2015, 6:45 PM EDT

    DixonChamp2 AP

    MotorSportsTalk’s Tony DiZinno reflects on the latest championship achieved by Scott Dixon and the Target Chip Ganassi Racing team.

  14. Damien Power hits Sonoma in person, live tweets, preps for IndyCar video series

    Aug 31, 2015, 5:35 PM EDT

    © INDYCAR © INDYCAR

    Damien Power hits Sonoma to meet up with brother Will. Hilarity ensues.

  15. Gabby Chaves confirmed as 2015 IndyCar rookie-of-the-year

    Aug 31, 2015, 12:27 PM EDT

    GCroty15 Getty Images

    Chaves first driver in nearly a decade to win both Indy 500, IndyCar top rookie honors in same season.