LAS VEGAS — The RSS Racing No. 39 Chevrolet of Ryan Sieg failed Saturday’s post-race inspection at Las Vegas Motor Speedway, resulting in a disqualification after the NASCAR Xfinity Series event.
Sieg’s car did not meet the ride-height requirements after the Rhino Pro Truck Outfitters 300, the series’ regular-season finale. The 32-year-old Sieg had been scored one lap down in 14th at the end of the 200-lap race, but was demoted to last-place points in the 38-car field.
The disqualification did not affect Sieg’s standing as one of the 12 drivers qualifying for the Xfinity Series Playoffs. Sieg was the last driver to clinch a postseason berth, having built up an significant cushion above the cutoff line in the points standings.
NASCAR officials also announced that two teams will be penalized for having a one lug nut not safely secured in a post-race check. The infractions were found on the No. 19 Joe Gibbs Racing car driven to third place by Brandon Jones and the No. 9 JR Motorsports entry of sixth-place Noah Gragson. Fines for both teams’ crew chiefs should be announced next week, according to guidelines in the NASCAR Rule Book.