On a day that began with the revelation of doubts surrounding the future of Acura’s involvement in IMSA, Nick Yelloly put Acura Meyer Shank Racing’s No. 93 Acura ARX-06 on the pole for Saturday's IMSA Acura Grand Prix of Long Beach.

The results of the 64th Rolex 24 At Daytona are now official, with no changes, following an extended technical inspection of the top four cars in each class.

IMSA has announced that while the results of the 64th Rolex 24 At Daytona are still provisional, the winning cars in all four classes have passed technical inspection.

JDC led for most of the hour, but the No. 7 Porsche is back in front again.

16,000 tires, 176 cars, 25 staff, 35 tire transporters, six races. That’s the scale of Michelin’s operation at this year’s Rolex 24 At Daytona, the biggest test in North American sports car racing for its organization.

13 Autosport, DXDT and DragonSpeed are preparing to fight for another Corvette victory in this year's running of the Rolex 24 At Daytona.

IndyCar ace Will Power leads for Mercedes while Porsche Penske Motorsport goes 1-2 in Saturday’s first Roar Before The 24 test session at Daytona.

IMSA has released an updated entry list for the 64th Rolex 24 At Daytona and preliminary Roar Before The 24 test days, confirming a 60-car grid.

Though still one of the leading factory GT drivers for McLaren in various championships around the world, Marvin Kirchhöfer took his first IMSA victory last year at the wheel of a Chevrolet Corvette Z06 GT3.R.Kirchhöfer was the ’secret weapon’ for AWA (now 13 Autosport) when the Canadian team won last...

Manthey has mastered GT racing all over in the world, now it's heading to IMSA for the first time.