Rule Changes For 2007
- All cars will utilize a 100% fuel blend of ethanol. In the 2006 season, cars utilized a 90%-10% blend of methanol and ethanol. From 1965-2005, Indy cars in USAC, CART, and IRL used a 100% methanol blend.
- Teams will utilize 3.5 liter displacement engines. From 2004-2006, the IndyCar Series used 3.0 L engines. From 2000-2003, the IndyCar Series also used 3.5 liter engines. The increase in displacement is to counter the expected horsepower loss resulting from the switch to a 100% ethanol fuel blend.
- Fuel cells in the cars will be reduced from 30 gallons to 22 gallons to offset the improved mileage experienced by ethanol.
- All cars will carry a rear-mounted safety light, to be controlled by race officials.
- On short ovals and road courses, front wings may be set at any angle between negative 5 and positive 5 degrees.
- Race day morning warm-up practice sessions have been eliminated. As a result, pre-qualifying practice sessions will be extended by 15 minutes.
- If qualifications are cancelled for an event, the starting lineup will be based on entrant points. In previous seasons, top practice speeds have been used.
- Series officials will have the discretion to determine the rookie status of any driver, regardless of the number of races started in previous seasons.
- IndyCar Series teams that participate in the Indy Pro Series can earn bonus testing days for the 2007 calendar year. The bonus testing days will be awarded following participation in designated 2007 IPS events, and are shared by the team's IndyCar Series driver and IPS driver. They can be conducted at any IndyCar Series venue except Indianapolis or Mid-Ohio.
Read more about this topic: 2007 Indy Car Series Season
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