Hendrick Motorsports might have just legally stolen the blueprint for Sunday’s Cup Series race at Bristol Motor Speedway. NASCAR and Goodyear are rolling out a brand new tire compound for the high-banked concrete half-mile in Tennessee.
The introduction of a new tire always sends crew chiefs scrambling for baseline setups. Yet, the Hendrick garage unloads this weekend with a massive notebook of track-specific data thanks to a combination of perfectly timed offseason tests and a cleverly exploited testing loophole.
Justin Allgaier and Goodyear’s Bristol Wheel Force Test
The drama centers on the new left and right-side Goodyear Racing Eagle tires debuting this weekend. Rubber degradation completely dictated the narrative during recent trips to Thunder Valley. The steep banking generates massive loads on the right-side tires, turning long green-flag runs into a delicate balancing act of speed and preservation.
The weather during that session was notably cold, but the track still took rubber beautifully.
“The objective at our Bristol tire test in November was to develop a setup that is less temperature dependent at laying rubber down,” Justin Fantozzi, Goodyear Director of Racing for the Americas, told reporters this week. “We heard loudly from the teams about variations in weather between practice and race conditions, and the need for a tire solution to address this. The track took rubber in November under rather cold temperatures, and again at the March OEM Wheel Force test.”
That sounds like standard tire development procedure until you look closer at the Chevrolet camp. When Bowman hit the track in November, he was piloting the new 2026 Chevrolet body.
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While the rest of the garage was scrambling for data, Hendrick got the raw numbers first. Goodyear and NASCAR returned to Bristol a couple of weeks ago for an OEM wheel force test to gather last-minute data on the tire and track surface.
This is where the rulebook creates a massive edge for the bow-tie brigade.
NASCAR prohibits drivers who earn Cup Series points from participating in wheel force tests. The sanctioning body designed that rule to prevent active Cup contenders from gaining an unfair competitive advantage via extra seat time. Chevrolet simply sidestepped the issue by putting Justin Allgaier in the driver’s seat.
Allgaier competes full-time in the NASCAR O’Reilly Auto Parts Series for JR Motorsports. He does not collect Cup Series points, though he has replaced Bowman in the No. 48 Chevy since Las Vegas.
Having Allgaier log miles on the brand-new tire just two weeks before the race is invaluable. Couple that fresh wheel force data with Bowman’s November laps in the updated Chevy body, and Hendrick Motorsports possesses a mountain of highly relevant information.
It is a massive weekend for Goodyear globally, with its Racing Eagle tires also supplying the NHRA Winternationals in California and the European Le Mans Series in Spain.
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The biggest spotlight is firmly on the Bristol bullring. Every Cup Series crew chief will be guessing on their tire pressures when the cars roll off the haulers for practice. Except, perhaps, the four crew chiefs calling the shots for Kyle Larson, Chase Elliott, William Byron, and Alex Bowman.
If a Hendrick Motorsports Chevrolet absolutely dominates the Food City 500 on Sunday, the rest of the garage will know exactly where they lost the race. They lost it during a cold November week and a quiet wheel force test in late March.
