Roman Grosjean Gipersoft - great tyres for qualifying

Haas pilot Roman Grosjean in the first test day in Abu Dhabi showed the 4th result.Roman Grosjean "It was a very good day during which we did a lot of good. Team tested all compounds of tires, including Medium and Gipersoft. Gipersoft is a great tire, perfectly suitable for training. Although, they just wear out instantly.All the tyres are much faster but they will wear quicker. Tyres may be used at a certain stage of degradation, but then they abruptly become ineffective.