NASCAR Cup Series R&D Check Clears Top Finishers After Bristol Chaos

Inspection process confirms Larson and Reddick cars meet all technical requirements despite pre-race penalties for other teams.

Apr. 15, 2026 at 1:06pm

Got story updates? Submit your updates here. ›

A fractured, geometric painting depicting the various elements of the NASCAR Cup Series race at Bristol Motor Speedway, including cars, pit crews, and officials, all rendered in a cubist style that breaks the scene down into sharp, overlapping planes of color and form.A cubist interpretation of the NASCAR Cup Series inspection process at Bristol, where pre-race chaos gave way to a clean final result.Bristol Today

The NASCAR Cup Series race at Bristol Motor Speedway ended with Ty Gibbs securing his first career win, but the focus shifted to the inspection process that followed. Several teams failed pre-race technical inspection, leading to penalties that disrupted their preparations. However, post-race checks and a subsequent R&D Center inspection confirmed that the cars of race runner-up Kyle Larson and fourth-place finisher Tyler Reddick met all NASCAR requirements, despite fan speculation about potential cheating.

Why it matters

The NASCAR inspection process is a critical part of ensuring a level playing field and maintaining the integrity of the sport. While pre-race penalties can create challenges for teams, the thorough post-race checks and R&D review help validate the final results and address any concerns about potential rule violations.

The details

NASCAR began technical inspection on April 11, with five teams failing inspection twice before passing on their third attempt. The entries included Kyle Larson of Hendrick Motorsports, Ross Chastain of Trackhouse Racing, Cole Custer of Haas Factory Team, Chad Finchum of Garage 66, and Michael McDowell of Spire Motorsports. NASCAR rules require penalties after multiple failures in one session, so each team lost its pit stall selection for race day and had one crew member removed for the rest of the weekend.

  • NASCAR began technical inspection on April 11.
  • The race took place on April 12 and ended in overtime.
  • NASCAR completed the R&D inspection on April 15.

The players

Ty Gibbs

The Joe Gibbs Racing driver secured his first win in the NASCAR Cup Series at Bristol Motor Speedway.

Kyle Larson

The Hendrick Motorsports driver finished third despite his team's pre-race inspection issues.

Tyler Reddick

The 23XI Racing driver finished fourth and also passed the post-race and R&D inspections.

Bob Pockrass

The NASCAR reporter who confirmed that Larson and Reddick's cars passed the R&D inspection.

Got photos? Submit your photos here. ›

The takeaway

The NASCAR inspection process, from pre-race checks to post-race review and final R&D analysis, helped confirm the integrity of the Bristol race results, despite some fan skepticism. While pre-race penalties disrupted team preparations, the thorough inspection process ultimately validated the top finishers and their compliance with NASCAR rules.