Competition package for 2015 announced; changes to rules, testing

Huge changes are rocking NASCAR yet again in the 2015 season. The latest competition package includes edits to rules, testing, and qualifying, and fans have mixed reactions so far. The most significant changes have been listed below, the information being obtained from the NASCAR Integrated Market.


  • All team-initiated, private testing sessions are banned.
  • Teams will be invited to participate in NASCAR and Goodyear tests.
  • Pre-season testing at Daytona International Speedway (also known as Pre-season Thunder) has been cancelled.


  • Horsepower will be reduced to 725 via a tapered spacer.
  • Roller valve lifters will replace flat valve lifter.
  • Rear differential gear ratios will be lowered, now targeting 9,000 RPM.
  • The rear spoiler will stand 6 inches tall, a reduction from the 8-inch spoiler seen in 2014.
  • Radiator pan will be 38 inches wide.
  • Optional driver adjustable track bar will be available.
  • Minimum vehicle weight goes from 3,300lbs to 3,250lbs due to a 50lbs ballast reduction.
  • Qualifying formats for all tracks will be updated.
  • Rain tires on road courses, as well as mandatory wipers, defogger, and rear-flashing rain lights installed for that particular event.

Some rules may be expanded upon once more information is available.

CHIME IN: What is your overall impression of the changes NASCAR is making for the 2015 season?


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