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Pirelli: the United States Grand Prix from a tyre point of view


By Berthold Bouman

Pirelli has allocated the medium (Prime, silver marked) and hard (Option, white marked) rubber compounds for this weekend’s United States Grand Prix, at the brand-new purpose-built facility the Circuit of the Americas, according to Pirelli a conservative tyre choice for a circuit with many unknown factors. All teams will get an extra set of the hard tyres on Friday during free practice in order to help them to understand the new track.

Pirelli tyres

A leap into the unknown, also for Pirelli, but Motorsport Director Paul Hembery said, “In many ways America will be the biggest challenge for us of the year, but stepping into the unknown is a situation that we are used to: last season the majority of tracks were completely new to us.”

About the choice of tyres he commented, “We’ve chosen the hard and the medium compounds as we think it will be quite a demanding track, based on the asphalt samples and simulation data we have gathered. Naturally we’ve leaned towards a slightly more conservative choice in order to cover every possibility at a brand new circuit, but the tyre choice in Abu Dhabi was also conservative and yet we saw one of the most exciting races of the year.”

Commercially the United States Grand Prix is also important for Pirelli, and Hembery explained, “We’re all absolutely delighted to be returning to America with Formula One: it’s a crucial market for us as well as being the home of many of the most enthusiastic fans out there. We’ve felt a huge buzz about this race, and with the championship so finely poised it couldn’t come at a better time.”

Technical tyre notes (by Pirelli):

• As Austin is a brand new circuit, the surface is likely to be ‘green’ and slippery, with a high degree of track evolution over the weekend. A totally new track often has a thin film of greasy oil on the surface, which is released by the asphalt as it settles into place. The race length will be 56 laps.

• Turn 11 is also particularly demanding in Texas as the driver starts braking heavily with the car already turning, creating an uneven distribution of forces across the tyres. Good grip from the compound is essential for an effective turn-in.

• The cars are likely to run with low gearing and medium downforce, with the set-up not expected to be dissimilar to that of Istanbul Park in Turkey.

• The weather can be uncertain in Texas at this time of year, with a 31% chance of rain on any given day on average. The month of November is characterised by rapidly falling daily high temperatures, with daily highs decreasing from 25°C to 19°C over the course of the month, exceeding 29°C or dropping below 13°C only one day in 10.

Video: The United States Grand Prix from a tyre point of view

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