Both drivers, Di Resta and Sutil, showed strong pace all weekend but missed out on possible points finishes as the mechanics struggled with their new captive wheelnut system which didn't seem to work as planned. “Both cars had the same problem with the wheel nuts and it cost us a lot of time in the pits,” said Sutil. “We’re not sure exactly what happened yet so the team stopped the cars to make sure we understand the issue.”
After the race a disappointed Di Resta said, "It's frustrating to come away with nothing given how competitive we have looked all weekend. We saw an issue at Adrian's first pit stop when I was sat behind him, which cost me about 15 seconds, and then I had the same issue with the wheel nut at my second pit stop. As a precaution the team chose to retire the car."
Force India first successfully used the system in Australia but did not anticipate that maybe the higher temperatures in Malaysia could interfere with the proper working of the system.
“We won’t go back to the old part,” deputy team principal Bob Fernley told Autosport, “We can’t go backwards, you need to cure the problem and carry on with your development. Today, everyone’s pitstops are well under four seconds but if you go back to the traditional route you are plus four.” (Reuters)