F1 teams blamed for pushing limits of Pirelli tyres as driver boycott looms 5 July, 2013 Sebastian Vettel on the Silverstone grid. Inset shows that a left-hand tyre has been fitted to the right of the car Formula 1 is on the verge of a major crisis as a F1 drivers boycott of the German Grand Prix is a very real possibility in the wake of the headline grabbing tyre blowouts at Silverstone and although Pirelli are copping the brunt of the criticism, many of the teams including world champions Red Bull are very much to blame too. In the constant battle to seek an edge over rivals teams have throughout the ages done everything possible to eke out an advantage and in the light of the Silverstone blowout saga it has emerged that pushing tyre usage to the maximum is common practice. Pirelli motorsport boss Paul Hembery said at Nurburgring, “As long as there is no system in place which allows us to enforce tyre related specifications, like tyre pressures or camber – the incorrect use of which were contributing factors of the tyre failures in Silverstone, we prefer to bring a less sophisticated tyre.” Sutton Images have released a photo (above) clearly showing the swapping of a left tyre to the right side of Sebastian Vettel’s Red Bull. The world champion did retire from the race, but ironically not through a tyre failure but rather a transmission problem on the RB9. Pirelli technicians fit tyres at Silverstone “The sidewalls are designed in such a way to deal with specific loads on the internal and external sides of the tyre. So swapping the tyres round has an effect on how they work in certain conditions,” said Pirelli. “In particular, the external part is designed to cope with the very high loads that are generated while cornering at a circuit as demanding as Silverstone, with its rapid left-hand bends and some kerbs that are particularly aggressive.” Under-inflating the tyres can also bring a competitive advantage but puts more stress on them. Pirelli said that, because of the potential danger, it had asked the governing FIA for a technical official to make sure cambers and pressures complied with set parameters in future. It will also be forbidden to swap the new rears for Germany around, since they too are asymmetric. The front tyres remain unaltered. Related NewsMagnussen not interested in talking to MassaMercedes backtrack on Brembo blame for Hamilton shuntRicciardo: It’s nice to get respect from FernandoHamilton targets high five in HungaryTech Talk: Hockenheim AnalysisGermany could host two grands prix per yearMassa: Rookies just take it easy!Vettel negativity blamed for turning off German fansPhotos: Best of German Grand Prix race dayAlonso hints that Raikkonen must improve Spartacus Who was it that was swapping the tyres round? Pirelli. They were complicit in swapping the them round. What the picture shows is that Red Bull have moved a tyre which was probably already run. Because one side of the car will get more wear than the other it’s a simple swap of sides. However, Pirelli are stating that tyres have an outside and an inside edge. They must have known when they were putting the tyres on to the rims for the teams that they were being put on the opposite way. This whole debacle is now turning in to mud slinging. And Pirelli are getting their mud by digging themselves in to a deeper hole! pr sceptic Who’s covering their ass and why would they be doing it? Does anyone really believe Pirelli doesn’t know how their tires are being used, and to blame Silverstone, how many months in advance did they know they would be racing there? It’s not like the track changed form the day of the race. I have a real problem with big companys passing the euro when peoples lives are at risk. JR Who were under inflating the tyres, the teams, who were cutting the curbs, the drivers, seems clear to me. Dave What to do about Pirelli ? Give them a boot to the butt and send them on their way to peddle their crap to someone else. McLarenfan Pirelli are not passing the blame what they are saying is yes tyres reversed on the rims we should have said NO our fault, higher track temp and some rough curbs and not enough PSI bit of extreme camber all added together caused the blow outs these things on their own no problem all together big bang Val All that image shows is the tyres the car arrived to the grid on, the tyres are then changed to the tyres it qualified on, so no real evidence that they tyre swapped!