He told Channel 4: “I think it’s pretty clear that qualifying is his weakness, obviously at the moment.
“And also when there’s any change of conditions in the preparation build-up that make that more tricky for him to understand to get those clean laps in, he’s in all sorts of strife.
“So it’s a pack of cards. We’ve seen the qualifying Saturdays for him have not worked.”
Webber: Perez has to sort the mixed conditions out
Webber also explained that an F1 driver ‘has to deliver in all conditions’, urging Perez to build consistency.
Sergio Perez climbed to P6 from P15 at Silverstone
He said: “Races, mate, anyone can move forward from there, even can I, that’s fine being an old fart like I am now. He has to sort qualifying out, he has to sort the mixed conditions out, and I think he’s going to be alright but at this level you have to deliver in all conditions.”