Chassis

Name: Dallara DW12 (Original designation: Dallara IR12. 2011: IR07)
Length: 5012.3 mm/197.3 in
Width: 2011 mm/79.2 in
Height: 1127.9 mm/44.4 in
Track Width: 1940 mm/76.34 in maximum
\Minimum Weight: 1565
Weight Distribution: 43% front/57% rear (approx.)
Fuel Capacity: 18.5 gallons

 

 

Engine

Type: Single- Turbocharged, four-cycle, four-valves-per-cylinder
Designations: Chevy IndyCar V6 (Chevrolet),
Displacement: 2200 cubic cm/134.2 cubic in

Cylinders: six

Valves: Two inlet, two exhaust (mechanically-operated, only. Variable valve timing not permitted)
RPM: 12,000 maximum
Weight: 112.5 kgs/248 lbs

Length: 460 mm/18.1 in
Horsepower: 550 to 700
Torque: 300 lb-ft (approx.)
Fuel: E85 Ethanol
Fuel Mileage: 3 mpg approx.

 

 

Clutch

Type: Three-plate carbon with steel housing
Vendor: AP Racing
Model Number: CP8153-DE03

 

 

Transmission

Type: Sequential
Manufacturer: Xtrac
Model Number: 1011
Number of Gears: Six
Shifting Actuation: Paddle
Shifting Actuation System Vendor: MegaLine

 

 

Suspension

Type (Front): Double A-Arm, pushrod, with third spring and anti-roll bar
Type: (Rear): Double A-Arm, pushrod, with third spring and anti-roll bar
Damper Vendors: Unrestricted, use of inerters within the damper housing permitted

 

 

Aerodynamics

Type: Ground effects underbody used in conjunction with front and rear wings
Front Wing Assembly: Fixed main element with second and third adjustable elements per side
Front Second (middle) Element Range: -10° to +32°
Front Third (top) Element Range: Three pre-set positions of 6.5°, 9.0° or 11.5°
Rear Wing Assembly: Fixed main element with single adjustable upper element
Rear Upper Element Range: 10° to 46°
Wickers: 1 in maximum height
Downforce: 4600 pounds at 200 mph (approx.)
Drag: 1500 pounds at 200 mph (approx.)
Strakes: One per tunnel

 

 

Brakes

Type: Carbon discs and pads with monobloc aluminum calipers
Supplier: Brembo
Front/Rear Calipers: Six-piston design, with 28/30/36mm pistons
Caliper Weight: 2.08 kg/4.58 lbs each
Front/Rear Brake Disc Dimensions: 328 mm dia./12.9 in dia., 30 mm thickness/1.18 in thickness (minimum thickness: 19 mm/.75 in)
Carbon Brake Pad Thickness: 24 mm/.94 in
Carbon Pad Weight: 270 g/.59 lbs each
Maximum Disc Operating Temperature: 900 C/1652 F

 

 

Electronics

ECU Vendor: McLaren
ECU Model Number: 400i
Dash, Data Logging System and Chassis Wiring Loom Vendor: Cosworth Electronics
Engine Loom: Vendor chosen by each manufacturer
Drive-by-Wire System: Vendor chosen by each manufacturer
Hand Clutch Vendor: AP Racing

 

Wheels

Type: Single lug
Vendors: BBS, OZ, Avus
Front Dimensions: 10 in wide x 15 in diameter
Rear Dimensions: 14 in wide x 15 in diameter
Wheel Nut Torque: 430 lbs

 

 

Tires

Type: Slick
Supplier: Firestone
Front Tire Dimensions: 10.0/25.8R15 (Road and street course)
Front Tire Weight: 18 lbs
Rear Dimensions: 14.5/28.0R15 (Road and street course)
Rear Tire weight: 23 lbs
Tire Allotment: 9 sets per weekend, 5 sets primaries, 3 sets alternates, 1 set used primary