A senior NASCAR executive says “we’re baffled” why tires didn’t wear as much in last weekend’s Cup race at Bristol compared to the March event there. Kyle Larson led 462 of 500 laps and won last Saturday’s race at Bristol Motor Speedway by seven seconds. That race had eight lead changes.

Senior competition leadership at NASCAR did not get the Bristol Night Race they expected on Saturday night. Both the sanctioning body and its tire supplier, Goodyear, worked to replicate what happened at the Tennessee half-mile in March,

NASCAR fans were unimpressed with the lack of race-leading moves at Bristol and lack of tire wear played a part.