Felipe Massa has admitted he is worried Ferrari will struggle if the team has to use Pirelli's hard tyres.
The Brazilian report said team boss Stefano Domenicali has also stated that Ferrari wants Pirelli to bring the soft and medium compounds to Silverstone, and that the tyre supplier is poised to make its decision.
Pirelli vowed to stay neutral.
"If it is very cold, you will not want to have the very hard compounds," insisted motor sport director Paul Hembery. "It's something to consider."