NASCAR Cup Series

Greg Biffle won his 18th career NASCAR Sprint Cup Series race Sunday afternoon at Michigan International Speedway.

TONY STEWART, NO. 14 MOBIL 1/OFFICE DEPOT CHEVROLET – SIDELINED WITH AN ENGINE ISSUE ON LAP 174 - HAVE YOU FIGURED OUT WHAT IT WAS YET? “I’m not sure. It’s something that is not a norm for sure. I appreciate everybody at the Hendrick engine department. We had three different engine tuners down there trying to get it fixed for us. It wasn’t for a lack of effort."

WHAT HAPPENED OUT THERE? "Marcos Ambrose is just driving over his head. I don't know if it is because he won last week, he's got extra pressure or what. He's been doing it all day. He's almost wrecked four times that I've seen. Unfortunately, four tires are better than two, and I was four. We're going to get this Furniture Row Chevy fixed up and get it back out on the race track, and get what we can."

A total of 16 Team Chevy drivers will start the Pure Michigan 400 NASCAR Sprint Cup Series (NSCS) race at Michigan International Speedway.

The summer tour continues this week in the rolling hills of Michigan for the 43rd Annual Pure Michigan 400. The new racing surface at Michigan International Speedway, produced speeds upwards of 210 mph and sent Goodyear's engineers back to the drawing board.

YOU CHANGED AN ENGINE IN PRACTICE THIS MORNING. WHAT HAPPENED? “The guys saw something in warm up this morning and we were trying to sort through it before practice started. They took a deeper look at things right before practice started and decided to change it."

Each race weekend, SRT Motorsports Engineer Howard Comstock gives his insight on the ‘Keys for Success’ for the upcoming race. This week’s focus is on the NASCAR Sprint Cup Series is the Pure Michigan 400 at Michigan International Speedway.

With the Camping World Truck Series and Sprint Cup Series heading to the 2 mile Michigan International Speedway and the Nationwide Series at the road course of Circuit Gilles Villeneuve in Montreal, there are many headlines to watch as the championship picture is becoming more and more relevant each weekend.

Jimmie Johnson piloting the No. 48 Lowe’s Chevrolet will take the green-flag from the third starting position for the Pure Michigan 400 NASCAR Sprint Cup Series race on Sunday. This will be Johnson’s 15th top-10 start at the 2.0-mile speedway in the Irish Hills.

Parker Kligerman (No. 22 Shell/Pennzoil Dodge Charger R/T) Qualified 17th “I wanted to be in the top 10 at least. We ended practice eighth and you kind of just want to backup practice. We went faster than we did in practice only by about two-tenths but you know we were faster than our teammate with the same setup so that was good."