NASCAR Cup Iowa: Several tire issues as Gragson leads practice

NASCAR

For one of the few times this season, Cup teams were given a 50-minute practice session on Friday, this time because it’s the series’ first race at the .875-mile oval. The track has also been recently partially repaved.With several cars doing mock qualifying runs late in the session, Gragson ended up with the top average speed at 137.988 mph.Ty Gibbs was second quick (136.558 mph) and Alex …Keep reading Source

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