The front works in conjunction with the rear wing (#1) to create down force and balance between the front and rear of the car. There are two types of front wings: single element for Indy, super speedways and 1.5-mile ovals and two element for short ovals and road/street courses. The front wing angle can be adjusted during a race to improve handling.
The Firestone Firehawk racing radials are mounted on 15" rims with front tires approximately 10" wide and rear tires 14" wide. The weight of an IRL car at speed is approximately four times its static weight so the sidewalls have to be strong enough to handle the stress, yet thin enough to dissipate the tremendous heat. On a super speedway, tread surface may reach the temperature of boiling water (212°f/100°c at sea level).
Construction: Monocoque contains cockpit, fuel cell and front suspension; engine is stressed (integral) member of chassis; rear assembly contains bellhousing, gearbox and rear suspension members.
The air inlet is an integral part of a normally aspirated engine (#3) as it feeds the required air to the engine.
The fuel cell is made of rubber and is covered with a Kevlar®-fitted blanket for extra protection in side impacts. It holds 22 gallons of ethanol.
Turbo charged engines of up to 2.2-liter capacity can feature up to six-cylinders with single- or twin-turbo configuration. Variable turbo boost will enable INDYCAR to adjust power levels to suit the wide variety of tracks the series competes on. Anti-stall technology incorporated into the engine control unit, should allow for fewer full-course yellows.
Six-speed, sequential shift gearbox with a newly added for 2010 Reverse. A pneumatic/electric gear shift system with electric paddle switches mounted to the steering wheel control the air shifter mounted to the gearbox. The paddle switches on the steering wheel tells an on-board computer to pump air pressure to the shifter mounted on the gearbox for an up shift or a down shift. This allows for shifting through all six forward speeds up and down without the driver's hands leaving the steering wheel.
The rear wing works in conjunction with the front wing (#8) and is essentially an upside down airplane wing designed to create down force. There are three types of rear wings; two element (super speed-ways and 1.5-mile ovals); single element (Indy); and three element (short ovals and road/street courses).