Pirelli's new PZero Red supersoft tyres made their debut at the Monaco Grand Prix circuit today with two free practice sessions around the tight and twisty confines of the 3.340-kilometre circuit.

On the track, the drivers also used the Pirelli PZero Yellow soft tyres, particularly during the first session when Sebastian Vettel went quickest for Red Bull Racing with a time of 1:16.619. Ferrari's Fernando Alonso was fastest in the second afternoon session, setting a time of 1:15.123 on the PZero Red tyres, in temperatures that peaked at 27 degrees centigrade ambient and 45 degrees centigrade on the track. The new PZero red tyres have red stripes on the sidewalls to make them easier to pick out on television this week.

The drivers used the session not just to assess the relative performance of the supersoft and soft tyres, which turned out to be as expected within the region of 1.2-1.4 seconds per lap, but also the durability of the tyres around the demanding and slippery Monte Carlo circuit.

Red Bull Racing's Sebastian Vettel completed 22 laps on the supersoft in the afternoon while the soft tyres are expected to provide a two to three stop strategy on race day.

Today's free practice session was crucial to prepare for qualifying on Saturday: a vital key to success in Monaco as six out of the last seven grands prix in the Principality have been won from pole position.

After today's sessions Pirelli was privileged to host a very special guest in the team hospitality unit: Prince Albert of Monaco, the sovereign of the Principality. Prince Albert met with Pirelli's Chief Operations Officer Francesco Gori at the team's new motorhome, signing the Pirelli visitor's book.

Paul Hembery, Motorsport Director: "We were absolutely delighted to welcome Prince Albert to our hospitality: as the sovereign of Monaco he hosts a fantastic show that quite rightly deserves its place as the highlight of the Formula One calendar. Today has given the teams some vital experience of running on our tyres in unique conditions and we're very encouraged by both the performance and the durability of our tyres here, on the debut for the supersoft. We look forward now to the all-important qualifying session on Saturday, where we will see which team gets the most out of their tyres on the day and which strategies they are likely to run in the race.

To check out our Monaco practice gallery, click here.