Fan Info - INDYCAR 101 - The Car Dallara - Verizon IndyCar Series Car Specifications

2018 Verizon IndyCar Series Car Specifications


Manufacturer: Dallara Automobili, Italy

Model: Dallara IR-12 Chassis (2012-Present)

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

Materials: Carbon fiber, kevlar and other composites

Weight: Approximately 1620 lbs (Road/Street/Short Ovals) and 1590 lbs (Speedways) (Does not include fuel/driver/drink bottle and contents/driver equivalency weight)

Length: Approximately 201.7 inches

Width: 76.5 inches maximum, 75.5 inches minimum (75.75 inches minimum for ovals) measured outside rim to rim

Height: Approximately 40 inches

Wheelbase: 117.5 to 121.5 inches

Wheel Size:

  • Front: 15 inches diameter, 10 inches wide. Minimum weight: 13.48 pounds
  • Rear: 15 inches diameter, 14 inches wide. Minimum weight: 14.7 pounds

Tires: Firestone Firehawk

Front diameter: 26 inches maximum, 25 inches minimum @ 35 psi

Rear diameter: 27.5 inches maximum, 26.5 inches minimum @ 35 psi

Brakes: PFC CR90 monobloc aluminum calipers with PFC carbon-carbon brake discs and pads.

Gearbox: XTRAC #1011 gearbox. Six forward gears, one reverse gear, Mega-Line Assisted Gear Shift (paddle-shift)

Fuel Cell: Single, rupture-proof cell, 18.5 U.S. gallons (standard)


Manufacturers: American Honda Motor Co., Inc., Chevrolet

Models: Honda HI18R Indy-V-6, Chevy IndyCar V6

Type: 2.2-liter (134.25 cubic inches) V-6, twin-turbocharged, Max. bore diameter 95 millimeters

Weight: Minimum weight is 248 pounds

Turbocharging: Twin BorgWarner 6758 turbochargers

RPM: 12,000 maximum (INDYCAR-supplied rev limiter)

Maximum Boost Pressure (above atmosphere): 1300 mbar (Superspeedways); 1400 mbar (Short Ovals); 1500 mbar (Road/Street Courses); 1600 mbar (Push-To-Pass)

Power: Estimated 550-700 horsepower, depending on turbo boost used at track

Fuel: Sunoco E85R fuel (blend of 85 percent ethanol and 15 percent racing gasoline)

Injectors: Maximum two injectors per cylinder, one for direct injection, 300 bar maximum fuel system pressure

Power: Estimated 550-700 horsepower depending on variable turbo boost used at track.

Injector: Direct injection

ECU (Engine Control Unit): McLaren Applied Technologies TAG 400i

Throttle: Drive-by-wire controlled port throttles