Mazda racer Jonathan Bomarito was the first to turn significant laps in the Mazda RT24-P at a recent test at Road Atlanta. He's one of four full-time drivers that will pilot the new Mazda Prototype – built to the new Daytona Prototype international (DPi) rules – in the top class...

Ex-Formula 1 ace Rubens Barrichello sent the Starworks Motorsport Riley to the top of the time sheets in the final Roar Before the 24 session at Daytona.On a wet but rapidly drying track, the Brazilian star saved his best until the very last moment, to clock a 1min47.230sec - some...

For the second season in a row, Michael Shank Racing with Curb/Agajanian will give fans a chance to ride along with the team in the final race of the year. The 2014 IMSA TUDOR United SportsCar Championship season-ending race will be staged at Road Atlanta with the 10 hour Petit...

Pataskala, Ohio (19 August 2014) – For the second season in a row, Michael Shank Racing with Curb/Agajanian will give fans a chance to ride along with the team in the final race of the year.The 2014 IMSA TUDOR United SportsCar Championship season-ending race will be staged at Road Atlanta...

RACER.com's coverage of the TUDOR United SportsCar Championship is presented by Circuit of The Americas. circuitoftheamericas.com/wectudor The Starworks Motorsport-run Riley-Honda Daytona Prototype will return to competition in the TUDOR United SportsCar Championship next weekend at Road America."We're very grateful for all the efforts HPD and Riley has put into this...

All photos by Marshall Pruett With more downforce coming to Daytona Prototypes for the rest of the season, IMSA is considering an upgrade in suspension technology to help DP teams cope with the change. DP teams tried the full 2014 aero package prior to the Rolex 24 at Daytona, which...