Less marbles in 2014?
Pirelli have announced that are trying to construct a compound of tyres which reduces the amount of marbles on track in 2014.
The move comes after current F1 drivers voiced their concerns about the amount of debris on circuits. The marbles, which are discarded pieces of rubber from the tyres, make it nigh-on impossible for drivers to commit to an overtaking manoeuvre off-line.
“The drivers certainly have commented on it and we can understand it,” said Pirelli’s motorsport boss Paul Hembery. “So it’s something that we are trying to do.”
The Pirelli boss has acknowledged that the marbles are created through wear so the softer compound of tyre are the main culprits for creating marbles.
“We know that it’s clearly wear-related, it’s basically tearing of the tyres in some cases, certainly the super-soft and to an extent the softer tyre have not had the strength that we needed.
“You can see some races where we had almost no marbles when you are using the hard and medium, certain surfaces where it’s low abrasion. So we are working to try and improve that. The general comment from the drivers is ‘reduce marbles’.”
Paul Hembery has admitted that there is a great challenge to try and stop the Pirelli tyres discarding excess rubber.
“At the moment we’re doing a lot of work on scaling and understanding where we are with the different compounds, we wanted to try and improve things like the tear resistance of the compounds, which has a direct impact on marbles which is something we are trying to reduce for next year,” he said.
“With the increased wheelspin, that has a chance of creating more marbles compared to where we are today, so we have to increase the mechanical strength of the compounds.”
Whether the changes to the tyre will create a different feel for the drivers, who will have a whole raft of new change and developments on their 2014 cars, is not yet known.
There has also been some concern related to the safety of marbles. On more than one occasion over the past few seasons have drivers had large chunks of rubber, either coming off the drivers car in front or from the discarded rubber on the side of the track, hitting the drivers helmet. A few drivers have said that if their visor were to be open for cooling purposes and a piece of rubber were to strike them, the result could be similar to the damage caused to Felipe Massa at Hungary in 2009, if not worse. The Brazilian’s helmet was hit by a rogue spring from Rubens Barrichello’s Brawn GP car. Massa subsequently lost consciousness and crashed badly.