The pit crew of race-winner Carl Edwards changes tires on his No. 19 Toyota during the Toyota Owners 400 Sunday at Richmond International Raceway.
The pit crew of race-winner Carl Edwards changes tires on his No. 19 Toyota during the Toyota Owners 400 Sunday at Richmond International Raceway. Chet Strange AP
The pit crew of race-winner Carl Edwards changes tires on his No. 19 Toyota during the Toyota Owners 400 Sunday at Richmond International Raceway. Chet Strange AP

NASCAR updates, clarifies rule, will require 5 tight lug nuts

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