NASCAR: New 2015 rules options go under the microscope at Michigan test

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Yesterday Jeff Gordon rolled into victory lane at Michigan International Speedway, and today, several NASCAR teams are back at the track in what could be an important day for the 2015 NASCAR Sprint Cup Series season.

Aero, engine and tire adjustments are on the docket for today’s test. NASCAR is examining reducing more downforce, and Goodyear is expected to bring a stickier tire, per NASCAR.com.

“We have a prime rules package and also will be doing a low downforce package, because some of the drivers have been very vocal,” said Gene Stefanyshyn, vice president Innovation and Racing Development for NASCAR, via NASCAR.com.

Those testing include Jamie McMurray, Kasey Kahne, Danica Patrick, Paul Menard, Brad Keselowski, Ricky Stenhouse Jr., Aric Almirola, Denny Hamlin and either Clint Bowyer or Brian Vickers.

Here’s a couple early morning updates from NBCSN NASCAR AMERICA insider Nate Ryan, who is at the test: