[Dylan]

NASCAR confiscates roof flaps from 31 teams

Thirty-one cars, including 16 in the Sprint Cup Series, failed inspection before Thursday's practices at Daytona International Speedway.

NASCAR confiscated the teams' roof flaps, which are designed to keep cars on the ground during spins and wrecks at high speeds, for further inspection. Penalties could be possible.

The cars involved included all three Joe Gibbs Racing entries (Kyle Busch, Denny Hamlin and Matt Kenseth), all three Roush Fenway Racing entries (Greg Biffle, Carl Edwards and Ricky Stenhouse Jr.), all three Michael Waltrip Racing entries (Clint Bowyer, Martin Truex Jr. and Michael Waltrip) and both Roger Penske Racing entries (Joey Logano and defending series champion Brad Keselowski). Cars driven by Jamie McMurray, Trevor Bayne, Casey Mears, Marcos Ambrose and Aric Almirola also failed inspection.

The roof-flap spacers had been illegally machined down to reduce weight.

NASCAR inspectors made those Cup teams install new, unaltered roof flaps before drivers were allowed on the track for the first of two practices.

It was too soon to determine if the infractions would result in points or monetary penalties, which typically would be announced 2-3 days after the completion of an event.