McLaren has labelled Mercedes' safety worries about the 2017 regulations as simply a "desperate" effort to ensure its Formula 1 advantage is not wiped away.
Motorsport.com revealed earlier that, in a report submitted to technical directors at a meeting earlier this week, Mercedes expressed reservations about whether tyres could cope with the high aero loads being predicted for 2017.
The FIA has asked a number of outfits to work with Pirelli over the next few weeks to come up with proper simulation data so as to check the validity of the concerns.
McLaren racing director Eric Boullier is far from impressed by Mercedes' stance, however.
He has suggested that, rather than being a genuine safety worry, Mercedes' actions were more about trying to ensure the German car manufacturer did not lose its current edge when the new regulations arrive.
When asked by Motorsport.com if McLaren shared Mercedes' reservations, Boullier said: “Not really.
"I guess it is the usual game where you want to stop some changes – you just argue and go after the safety worries. But it is pretty desperate for Mercedes.”
The words are in contrast to the statements made by Mercedes motorsport boss Toto Wolff earlier on Saturday, the Austrian suggesting that other teams are pursuing "agendas and political perspectives" in their unwavering support for the rule changes.