Pirelli WorldSBK boss Giorgio Barber has said his firm will take two new development tyres to this weekend’s Laguna Seca round even though after the issues at Misano, he gave assurances only tyres with known performance would be used until all analysis of the problems had been completed.

Michael Van Der Mark, Jordi Torres and Jonathan Rea all experienced problems over the Italian race weekend with the Dutchman’s massive highside the most obvious. The firm’s own analysis has blamed very high stresses caused by track temperature at Misano for the three failures, ‘no evidence’ that it was to do with tyre composition and issued a warning that tyre pressure regulations must be adhered to.

”I believe it’s really evident to everyone that over the last few years Pirelli has been significantly increasing the level of performance of the tyres used in the Superbike World Championship. Which, it is good to remind, are standard products regularly purchasable on the market and not prototypes like the ones used in MotoGP,” said Barbier.

“With time, the power and the technological level of the bikes has also clearly increased compared to the past. The more the level of the tyre’s performances increases, the more the product’s “sensitivity” to the smallest of external variables, such as the pressures, increases.

“After what happened in the last two rounds we have decided to carry out an additional step for our product’s development, and we will continue to do so because we want to match the excellent performance with maximum reliability, which has always been a characteristic our tyres.

“We should also mention the fact that the product’s development hasn’t progressed at the same speed as Pirelli’s possibility to monitor its tyres during the race. In other championships the tyre manufacturer is able to know, in real time, the pressure as each bike is equipped with pressure sensors. For us, this kind of control is currently impossible as not every team has pressure sensors.

“The pressures, together with a correct utilization of the tyre warmers, play a very important role in allowing tyres with an extremely high technological level to work properly.”

Pirelli will provide riders with two development rear solutions: the W0575, featuring the same compound as the standard SC0 but with solutions and structural characteristics succesfully used in the past. They will also have the W0576, again in soft compound and also featuring technologies and structural characteristics already used by Pirelli in the past.