NASCAR Cup Series teams were given an extra set of tires on Saturday night at Bristol Motor Speedway, as excessive tire wear struck the short track for the second time in less than two years.

Alexander Rossi thinks there's no reason he couldn't go for the move that led to the collision with race leader Robert Wickens, ruining the day for two of the strongest cars all race long."They made it very clear in the drivers' meeting that the rule on blocking was you can't...

Pirelli says it will try to reduce the marbles produced by its tires in the 2014 Formula 1 season following suggestions from drivers.The Italian manufacturer's tires, in particular the softer compounds, generated large amounts of marbles during 2013, making going off the racing line to overtake less viable for drivers."The...