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For more than a third of active NASCAR Sprint Cup Series drivers, there will be no rest for the weary.

One driver from each Cup organization is eligible to participate in a test of newly repaved Kentucky Speedway on Monday and Tuesday. The test is a continuation of NASCAR’s proving-out process for a new lower-downforce competition package earmarked for 2017.

Last year, as the sanctioning body solidified the rules for 2016, races at Kentucky and Darlington were used as benchmarks for the progression toward lower downforce for the Cup cars. This year, in selected events, NASCAR is taking an additional 500 pounds of downforce and 125 pounds of sideforce away from the cars by chopping the size of the spoiler, reducing the surface area of the splitter, tapering the rear deck lid fin and eliminating rear axle offset. Continue reading →