The chicane before the last corner has been removed from the layout creating a high-speed run through what are now Turns 13 and 14 that puts extra stress on the tyres.
Tyre management has been a key issue in F1 this season, with some teams struggling more than others, and Red Bull showing clear superiority over rivals at most venues.
“I think the left front will be crying for the whole race,” said Leclerc when asked by Autosport about the revised Barcelona track.
“It’s the same for everybody, it’s going to be a big challenge I think in terms of setup, and also to try and help that left front as much as possible.
“I hope that with the new parts we bring, we will be good in terms of tyre management, because I expect this to be the main thing in Barcelona.”
McLaren's Lando Norris has also flagged that the new layout will be tougher on drivers.
“It will be even more physical on the neck, so I’m not looking forward to it at all,” said Norris. “Whether it’s going to make for better racing, I hope so.
“It’s a tricky last corner, to be honest. I wouldn’t say it’s going to be flat-out, but I think it should help with the racing.
“It might become more of a management race than what it already is, and it’s already a huge management race.”
Source: Autosport