"Our weekly science experiment continues."<br>That is how Brad Keselowski summed up the new right-side tires brought by Goodyear to Bristol Motor Speedway that were engineered to fall off quicker than its predecessor but actually showed little wear compared to the spring race during Friday practice.<br>"The tires held up really really well today," Keselowski said. "I’m surprised by that but we ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/nascars-science-experiment-continues-with-puzzling-bristol-practice/10758961/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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