Pirelli finds cure for tyre issue

Following a number of failures this year where the rubber disintegrated after a puncture, Pirelli were forced to address the matter on safety grounds.

It forced the Italian manufacturer into a redesign of the belt pack, switching from a steel drum to kevlar as used last year.

The aim was for a comprehensive test during Friday practice ahead of last weekend's Canadian Grand Prix, with the tyre to then be introduced for the British GP from June 28-30.

However, poor weather in Montreal resulted in only a handful of teams trying out the experimental tyre for a few laps prior to Sunday's race.

Without sufficient data, Pirelli was forced to abandon plans for a Silverstone launch.

Pirelli has now confirmed the tyre construction will remain unchanged for the next three races due to what it claims is "a lack of team support".

"The tyre construction will remain unchanged, contrary to Pirelli's initial plans," a statement read.

"This decision is due to the fact the new tyres, which were brought to the Friday free practice sessions in Canada, could not be tested sufficiently due to rain - and the teams failed to agree unanimously about introducing the changes.

"Instead, a change in the tyre production process should now ensure the delamination issue has been addressed."

Pirelli is understood to have changed the bonding procedure that adheres the rubber to the belt.