Pirelli have altered the markings on their tyres to make it easier to tell the different between the two.
For the next two races in Malaysia and China they have added a gold stripe to the sidewall of the soft tyres (see picture). These will continue to feature yellow lettering.
Pirelli describe this as an “interim solution”. A spokesperson added: “From Turkey onwards we will have a more permanent version of increasing the colours on the tyres so that they become more visible.”
The teams will have the option of running experimental tyres during practice on Friday. These tyres will have no markings.
Pirelli motorsport director Paul Hembery said: “This tyre represents a new philosophy in the compounding and it will be interesting to hear the teams’ feedback.
“Generally speaking it’s a more durable tyre but we need to be careful not to be too conservative: the emphasis is still firmly on entertainment and putting on a great show for the crowds.”
Each team will receive two sets of the tyres which they can use during Friday’s sessions only.
2011 Malaysian Grand Prix
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Image © Renault/LAT