Button said after Friday practice that drivers had found themselves losing all grip from their tyres if they push them too hard, something that led to several spins during both sessions.

Both Button and teammate Fernando Alonso spun in FP2, the Spaniard also seen running off the track.

The circuit has been resurfaced for this year's race, leading to a situation that Button called "very unusual".

The McLaren driver admitted the situation made things very tricky.

"The circuit is fun to drive," said Button. "There's quite a bit of grip.

"The problem is the difference between grip and no grip is massive, so if you get a tiny slide the tyre suddenly drops off a cliff and you lose every bit of grip you have and you feel like an amateur trying to gather the car back up, because suddenly the tyre doesn't work if you put too much load into it.

"It's very unusual."

He added: "It's tough running here the way the tyres work. Now the circuit's gripping up, it's not as bad, but if you push the tyres a tiny bit too much, it's gone. It snaps away from you.

"It's very strange because you don't feel it coming, and if the best drivers in the world in the world can't feel it coming, then it's unusual. It's a mixture of the asphalt and the tyres."

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