Jarno Trulli has criticised the new Pirelli tyres, claiming they make the car shift from understeer to oversteer too readily.

The new tyres have been met with a mixed reaction, but the general feeling is that they will improve racing with higher degradation rates. However, Trulli takes issue with the way they affect the car's handling.

"I think their development work was missing something," he told Autosprint. "The tyres are not well balanced. Pirelli says the FIA has asked them to make tyres that wear quickly, but I don't think this is the problem.

"In my opinion, the degradation is secondary to the balance on the track. When you have new tyres there is initially understeer and then three laps later the behaviour is different - either oversteer or impossible."

The Lotus driver was also critical of F1's ever-changing regulations.

"Frankly, with regards to KERS, is it exciting?" he said. "The people at home just want to understand, but if you change the rules every year, all you do is confuse them."

Trulli also had criticism for Italy's motor racing federation as well as Ferrari, when asked about why Italian drivers are a dwindling breed in F1.

"I know who to thank for my career and it is not the Federation," he said. "And Italians have historically not been included in Ferrari's programmes; I don't know why but it's true."