Specs for IndyCar Performance

IndyCars are open-wheeled race cars that race in North America's IndyCar series. Restrictions control the chassis size and weight, engine displacement and configuration and tires to control cost and make the series competitive. These cars race in the Indianapolis 500 and other Indy Racing League events.

  1. The Engine

    • The IndyCar engine is a 3.5 liter (213.6 cubic inches) V8 without turbo or supercharger. It has a double overhead cam with four valves per cylinder. The engine is limited to 10,000 RPM. The Indy Racing League supplies a rev-limiter that limits the Revolutions per Minute. It uses ethanol for fuel.

    Chassis

    • Dallara manufactures the IndyCar chassis. It is made of carbon fiber and weighs 1,530 pounds for ovals and 1,600 pounds for road courses. These are minimum weights with lubricants and coolants, but without driver or fuel. It is 192 inches long and 78 inches wide with a wheelbase of 120 inches. Wings vary for oval or road course.

    Tires

    • The tires are Firestone Firehawks. The front size is 25- to 26-inch diameter and 10 inches wide at 35PSI. The rears are 26.5- to 27.5-inches diameter and 14 inches wide. The tire pressure varies for super speedway, short oval or road course. The tires come in a soft compound and a hard compound.