In 1989, Goodyear began transitioning from bias play to radial tires in NASCAR competition. None of the current Cup Series drivers have run a bias ply tire in a Cup series race previously.<br>Because of the dirt track configuration for this weekend’s race at Bristol (Tenn.) Motor Speedway, teams will be running two new Goodyear tire codes this weekend.<br>While the tires feature the same ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/bias-ply-tires-bristol-dirt/5867530/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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