NORRIS NOT BOTHERED BY RED BULL 'TRICK'

McLaren driver hails 'successful season' as he shrugs off rival's contentious device

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McLaren's Lando Norris said he felt calm and confident on Oct 17 ahead of this weekend's United States Grand Prix, and did not expect rivals Red Bull to lose performance after making requested car alterations.

The reigning champions admitted they had made changes after talks with the sport's ruling body the International Motoring Federation (FIA), widely reported to have concerned a "trick" mechanism to control the ride height of their cars.

Red Bull have denied making use of the device.

"It's one thing having it on your car and a second if you're using it," said Norris, who is 52 points behind Red Bull's three-time world champion Max Verstappen with six races remaining. Verstappen will be seeking to end a run of eight races without a victory at the Oct 20 contest at the Circuit of the Americas.

"So, if it has been helping them, if they've been utilising it in the way people think they have, then maybe it will shift in our direction," added Norris. "But when you talk about things like that, they're not going to have got several pole positions or wins just because of such a device.