Florida-born F1 driver Logan Sargeant revealed his theory over why testing in Bahrain was blighted by loose drain cover issues.
On both Thursday and Friday a drain cover at turn 11 came loose after a car ran over it, causing a session cancellation on Thursday and complete rejig of Friday's schedule following a red flag which caused a delay of over an hour.
Both instances both come after drain covers caused a major issue at the inaugural Las Vegas Grand Prix last year, one of the races on home turf for Sargeant.
The Williams driver, who is entering his second season in F1, spoke exclusively to GPFans USA about his belief that ground-effect era cars are putting more strain on drain covers.
The 23-year-old took time out from his busy testing schedule in Bahrain to discuss the recurring F1 issue.
"I'm sure those checks are made [on drain covers]," he said. "I'm sure they're unexpected when it [a drain cover breaking] happens.
"Look at the pre-season testing here in Bahrain – a track that normally has no issues at all and we've had two huge stoppages for drain covers. I think a lot of it is possibly down to the new era of cars having so much suction coming from the floor and they just need to be secured better.”