Formula One tyre supplier Pirelli warned teams on Thursday that they will quit the sport at the end of the season if a new contract from 2014 is not agreed soon.
Motorsport director Paul Hembery did not hide his impatience when said time was running out for the Italian company to design and test tyres suitable for radically different 2014 regulations.
"Apparently on September 1 we are meant to tell them (the teams) everything that they need to know for the tyres for next season. We are now mid-May so you can imagine how ludicrous that is when we haven't even got contracts in place," he said.
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