NASCAR announces 2019 MENCS rules

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Auto Club 101: Rules package, new Goodyear tire and more

RULES PACKAGE

The Monster Energy Series will run the 2019 rules package tailored for tracks great than 1.33 miles in length. Differing from what we saw at the 1-mile ISM Raceway last weekend, a .922-inch tapered spacer will be fitted on all cars to reduce horsepower and aero ducts will be in effect, along with the larger spoiler to add roughly 50 percent more downforce. The combination of a smaller tapered spacer to reduce engine horsepower to a target goal of 550 (from 750) and aero ducts should foster tighter racing.

GOODYEAR TIRE SELECTION

Goodyear will bring a new right-side tire compound for both the Monster Energy NASCAR Cup Series and Xfinity Series races on the 2-mile California track due to tire wear seen at Auto Club Speedway. The multi-zone rubber will feature a more durable compound on the tread’s inside two inches, with the outer 10 inches optimized for traction. The left-side tire combination will be the same as what was put into circulation at Darlington Raceway last year, another track that sees higher levels of tire wear.

https://www.nascar.com/news-media/2019/03/13/auto-club-101-rules-package-new-goodyear-tire-and-more/?linkId=100000005406186
 
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