Updated

IndyCar is considering adding a road race at the Indianapolis Motor Speedway as soon as next year.

Mark Miles, CEO of IndyCar parent company Hulman & Co., said Wednesday that IndyCar is leaning toward running the event in May, the same month as the Indianapolis 500. He said the series favors the early part of the month, but the final day of Indy 500 qualifying and the day before the 500 also are possibilities.

Graham Rahal and Ryan Briscoe tested cars on the road course Wednesday to help IndyCar gather data. Rahal liked the course but said it lacked grip and there weren't enough places to pass.

It was the second time IndyCars had driven the road course at IMS. Dan Wheldon tested on the course in 2011.