Spa Practice 2: Vettel fastest despite tyre failure 23 August, 2013 Sebastian Vettel ended day one at Spa-Francorchamps fastest of all Pirelli’s Formula 1 tyres came under renewed scrutiny on Friday after triple world champion Sebastian Vettel suffered a blowout in Second Practice at the Belgian Grand Prix. The Red Bull driver was fastest in the session with a best lap time of 1:49.331, but the sight of him nursing his stricken car back to the pits at slow speed with strips of right rear tyre buckling and flailing was more of a talking point. Pirelli, who had to strengthen their tyres after a spate of blowouts at the British Grand Prix in June threw the sport into crisis, said that Vettel had suffered a puncture and that they were investigating what had caused it. Last month’s Hungarian Grand Prix, the last race before the summer break, was free of tyre-related incidents but the Hungaroring is one of the slowest circuits while Spa is the second fastest track with heavy loads on the tyres. Romain Grosjean was best of the rest Vettel had earlier set the best lap of the 90 minute session with the sun shining bright after a damp start to the day in the Ardennes forests where the weather is notoriously capricious. The championship leader’s time was 0.059 quicker than second placed team mate Mark Webber who was comfortably clear of Frenchman Romain Grosjean in the Lotus with a time of 1:50.149. It was an ominous signal by Red Bull to their rivals. Ferrari’s Fernando Alonso set a largely unrepresentative pace in the opening session with a lap of 1:55.198 as Formula 1 drivers shrugged off the long August break and got back up to speed. The Spaniard, third in the championship after 10 of 19 races, was ahead of the two Force Indias of Paul Di Resta and Adrian Sutil with the top three setting their best times in the final half hour of an incident-free session. Felipe Massa was fourth fastest The afternoon was more lively, with Dutchman Giedo van der Garde losing control and crashing his Caterham into the barriers at Stavelot. The McLarens of Briton Jenson Button and Mexican Sergio Perez showed signs of progress, despite the team backing away from an earlier assertion that they could challenge for a victory this weekend. Perez was fourth fastest in the morning and eighth in the afternooon, when the team tried out some developments for 2014. Button, last year’s winner in Spa, was out of the top 10 in both sessions. Vettel, who has a 38 point lead over Lotus’s Kimi Raikkonen, had been sixth fastest behind fellow-German Nico Rosberg in the Mercedes in the morning. Raikkonen, who cried off sick from media engagements on Thursday after weeks of speculation about his future and talk of moves to Red Bull or Ferrari, was sixth in the afternoon. The Caterham of Giedo van der Garde is recovered after his off at Stavelot Mercedes’ Lewis Hamilton, winner in Hungary and increasingly looking like Vettel’s biggest rival after three poles in succession, had a quiet day and was 15th and 12th respectively for Mercedes. The Silver Arrows, with well known one lap pace, were clearly focusing on heavy fuel runs – they were slowest of all through the main speed trap. Finland’s Heikki Kovalainen, dropped by Caterham at the end of last year, made an appearance for the team in place of regular race driver Charles Pic in the opening session and was 16th quickest. Pic returned for the afternoon session and ended 20th on the timing screens. Although the sun shone brightly in the afternoon over Spa-Francorchamps, forecasts for the race indicate a clear day but qualifying (on Saturday) apparently has rain looming all day. As always the Belgian Grand Prix weekend compounds the challenges by throwing in the unpredictable weather factor. (Reuters) Subbed by AJN. Belgian Grand Prix, Free Practice 2 – Friday, 23 August 2013 Pos No Driver Team Time Gap Laps 1 1 Sebastian Vettel Red Bull Racing-Renault 1:49.331 22 2 2 Mark Webber Red Bull Racing-Renault 1:49.390 0.059 34 3 8 Romain Grosjean Lotus-Renault 1:50.149 0.818 34 4 4 Felipe Massa Ferrari 1:50.164 0.833 27 5 18 Jean-Eric Vergne STR-Ferrari 1:50.253 0.922 28 6 7 Kimi Räikkönen Lotus-Renault 1:50.318 0.987 33 7 3 Fernando Alonso Ferrari 1:50.510 1.179 21 8 6 Sergio Perez McLaren-Mercedes 1:50.536 1.205 27 9 9 Nico Rosberg Mercedes 1:50.601 1.270 33 10 14 Paul di Resta Force India-Mercedes 1:50.611 1.280 27 11 15 Adrian Sutil Force India-Mercedes 1:50.629 1.298 30 12 10 Lewis Hamilton Mercedes 1:50.751 1.420 27 13 11 Nico Hulkenberg Sauber-Ferrari 1:50.972 1.641 33 14 16 Pastor Maldonado Williams-Renault 1:50.991 1.660 28 15 5 Jenson Button McLaren-Mercedes 1:51.195 1.864 28 16 19 Daniel Ricciardo STR-Ferrari 1:51.447 2.116 26 17 17 Valtteri Bottas Williams-Renault 1:51.568 2.237 28 18 12 Esteban Gutierrez Sauber-Ferrari 1:51.644 2.313 26 19 21 Giedo van der Garde Caterham-Renault 1:53.157 3.826 21 20 20 Charles Pic Caterham-Renault 1:53.251 3.920 29 21 22 Jules Bianchi Marussia-Cosworth 1:53.482 4.151 28 22 23 Max Chilton Marussia-Cosworth 1:54.418 5.087 12 Content on GrandPrix247.com by: staff & contributors, Reuters syndication, GMM service, Getty Images, Formula 1 teams, sponsors & organisations.