Pirelli has warned Formula 1 bosses that it will go ultra-conservative next season unless the rules are changed to specifically request certain tyre durability. When the Italian supplier joined F1 three years ago, it was asked to make tyres which wouldn't last more than a third of the race to force drivers into making more than one stop. However that was a verbal request, not a written rule, which Pirelli believes is partly to blame for the criticism they've taken. Pirelli wants the rules to be amended to define what is required of them, or for F1 to impose a minimum two-stop rule, otherwise they will deliver ultra-conservative tyres which will last half a race or more. "We want a...
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