BRISTOL, Tenn. (AP) — NASCAR made a flurry of procedural changes ahead of its first Cup race on dirt since 1970. Bristol Motor Speedway converted its facility into a dirt track in an experiment on a revamped 2021 schedule. It marks the first dirt race for the top series since 1970 and NASCAR is concerned it could be a disaster. The stock cars proved too heavy for the dirt and tire wear dipped to dangerous levels during practices. NASCAR the day before the race said it was making pro-active moves to save Sunday’s show.
