Force India's Esteban Ocon says the new speed bumps placed at Mexico City's first corner to enforce track limits are "dangerous" and could cause damage to a Formula 1 chassis.
F1's governing body the FIA has introduced 50mm high speed bumps on the left hand kerb between Turns 1 and 2 for this year's Mexican Grand Prix, with a second series of them situated between Turns 2 and 3 and further limits at Turns 7/8 and 11.
This follows track limits controversies at last year's race, when winner Lewis Hamilton avoided a penalty despite cutting across the grass at Turn 1 after the start, while Max Verstappen was penalised for corner-cutting when defending position from Sebastian Vettel late in the race.
After completing his track walk for the 2017 race (pictured above), Ocon was not impressed with the severity of the bumps.
"No one wants to go off, but it is a bit harsh," he said. "It is dangerous. You are going to launch and I think it's not going to stay like this.
"I think if someone hits that they will have to make a chassis change."
Ocon and Haas driver Romain Grosjean both said the way in which the bumps had been laid out meant there was no way for drivers to rejoin without taking to the grass or running over them.
"There's no way to rejoin," Ocon said. "We can't rejoin the track so we have to cut the grass."
Grosjean added: "Turn 1, there is a slight issue in that you can't rejoin the track. You don't want to go there.
"There is no route bringing you back to the track. That needs to be thought about.
"There's another tricky one, which is Turn 7. If you go wide there, you have to come back around an orange bit, it's pretty narrow. But the rest works."