The NASCAR All-Star Race will again have a simplified race format, but Cup Series teams will have different tire options.Goodyear will bring its wet weather tire should the conditions warrant its use. There will also be the 'prime tire,' which is a slick racing tire that was determined from the...

The Formula 1 Commission has approved a number of regulatory changes including a new wet weather tire this season, the introduction of a winter shutdown and closing gaps in the rules.The teams met with Formula 1 president and CEO Stefano Domenicali and FIA head of single-seaters Nikolas Tombazis on Tuesday...