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GP Week : Issue 233
Having crossed the line in eighth place, Felipe Massa was excluded from the Brazilian Grand Prix after his car was found to have breached a number of sporting and technical regulations. specifically, Massa's car was found to have exceeded the allowable tyre temperature on the grid, the tyre allegedly 27 degrees above the maximum set by tyre supplier Pirelli. After hearing from the team post-race, the stewards declared that "the rear right tyre on car 19 did not comply with the maximum treat temperature as specified in the event preview by the official tyre supplier. "The temperature of the right tyre was measured in compliance with the FIA Technical Directive TD/029-15. The team did not comply with the FIA Formula One Technical & Sporting Regulations, FIA International Sporting Code and the instructions of the official tyre supplier in the event preview." However, according to Williams it did, the team confirming it will appeal the decision declaring the FIA measurement incorrect. According to the team's performance director Rob Smedley, the team has data from two other sensors that show the tyre was within the regulations. We have two independent sensors, the first one is the PT1000 which sits inside the tyre blanket and tells us what the surface temperature is, and that one was always in compliance with the regulations," Smedley argued. "In fact, the last time we could read it, when they took the set off to the grid, it was about 104 degrees. "The next independent measure we have is from the car data (see photo). It shows the right rear tyre temperature on Massa's car was 107 degrees. "So we have two independent sensors, they both say we are in compliance with regulations and we have data to back it up. "In addition, we have had independent correlation from our blanket temperatures sensors and car temperature sensors to the FIA guns, which Pirelli did for us after all the fuss with Mercedes in Italy. "In addition to that, we have also bought exactly the same sensor that the FIA uses and we do random checks throughout the weekend to ensure it doesn't happen. "For us it is critical that we understand where this problem came from, but we have three independent measures and none of them give anything like the FIA measurement on the grid." Smedly also argues that, had the temperature been that high, it would have been noticed on the grid as engineers checked tyre pressures, "but the bleed the engineer did on the grid was entirely normal. "What the engineers would have seen [with a hotter tyre] would be that we were bleeding out an awful lot more pressure than we had been for the rest of the weekend. "That would have been an anomalous amount of pressure, 3 psi more than he is normally bleeding out, to get down to the Pirelli minimum. That would have been flagged at some point and nothing has." 30 GPWEEK.com // 30 GPWEEK.com // F1 >>> BRAZIL PARTNERS: Massa excluded, Williams to appeal