Pirelli is to begin preparations for the 2015 tyre warmer ban at this week's test in Bahrain.
Each team will receive an extra set of medium tyres in order to test their behaviour.
'Pirelli is also bringing an extra set of medium tyres per team to Bahrain, with 2014 construction and compound', read a statement released by the Italian company.
'However, these are actually considered to be ‘prototypes’ as their purpose is to test tyre behaviour without warming blankets, which will be banned from 2015 onwards.'
Each team has 30 sets of tyres for the upcoming test, split across three compounds: hard, medium and soft.
The special winter tyres, which was initially set to be used only at Jerez, is also being trialled again this week.
'The teams have asked to try this tyre, designed for Jerez, in Bahrain as well in order to assess how it performs in higher ambient temperatures', continued the statement.
"The first test of the year in Jerez was all about the teams getting their first taste of a very different set of technical regulations, so as expected running was limited and evaluating tyres was not a priority," said Pirelli's motorsport director Paul Hembery.
"On top of that, winter conditions in Europe – even in southern Spain – are not representative of the race conditions we will generally encounter throughout the rest of the season. In Bahrain, we’re expecting better weather and more running, which will allow ourselves and the teams to assimilate more data and knowledge of the tyres."