Listen to this article Hamilton made the claim in Barcelona on Wednesday, saying that some driver stewards travel with “certain individuals” with whom they are friendly, and implying that a close relationship could have an impact on their thought process. The stewarding system was not addressed by new FIA president Mohammed Ben Sulayem in his recent statement on changes to the way the sport is refereed. While insisting that he didn’t think stewards showed a bias, Wolff said that the key was to have consistency. “I think we need professionalism in the stewards’ room,” said Wolff. “I don’t think there is a conscious bias, to be honest, [they are] intelligent people. But most important is whenever we talk about the race direction, the support that they will have back at base, or the stewards, there need to be a standard. “This is what we deserve. And this is what everybody expects. And I think there’s some very good peop …