2021 Lincoln Corsair Bulb Sizes & Tire Sizes

Last reviewed October 16, 2026

The short answer

The 2021 Lincoln Corsair has sealed LED headlights with no replaceable low-beam bulb, and rides on 225/60R18 tires as standard (Standard); Reserve uses 225/55R19.

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Tire sizes by trim

Standard (standard) 225/60R18 Search Amazon for 225/60R18 tires
Reserve 225/55R19 Search Amazon for 225/55R19 tires

The size on the placard inside the driver's door jamb is the one your car left the factory with. Match that, not this table, if they differ; a previous owner may have changed wheels.

Bulb sizes

Low beam Sealed LED, no replaceable bulb
High beam Sealed LED, no replaceable bulb
Front turn signal Sealed LED, no replaceable bulb
Rear turn signal Sealed LED, no replaceable bulb
Brake light Sealed LED, no replaceable bulb
Tail light Sealed LED, no replaceable bulb
Reverse light Sealed LED, no replaceable bulb
License plate Sealed LED, no replaceable bulb
Dome / map light Sealed LED, no replaceable bulb

Wheel specs and lug torque

Lug thread M12x1.5 Search Amazon for M12x1.5 lug nuts
Lug nut torque 100 ft-lbs (136 Nm)

Key fob, battery and sensors

Key fob battery CR2450 Search Amazon for CR2450

Dimensions, weight and fuel

Fuel Gasoline
Octane 91 recommended, 87 allowed
Fuel tank 16.2 gal (61 L)

Worth knowing about the 2021 Corsair

  • LED lighting. The low beam, high beam, front turn signal, rear turn signal, brake light, tail light, reverse light, license plate, dome / map light are sealed LED units with no user-replaceable bulb. A failure means replacing the assembly.
  • Tire chains. The manual permits tire chains or cables, within limits on which tires and which wheels. Those limits are in the next note; read them before you fit anything. Search Amazon for tire chains →
  • Tires. Cables or chains of 10 mm or less go on the front axle only, and only with 225/60R18 tires. The Grand Touring's tire size is not shown because the sources disagree.
  • Torque. Tighten lug nuts to 100 ft-lbs in a star pattern with a torque wrench, and re-check after the first 50 miles. This figure is from the owner's manual; an impact gun will overshoot it.
  • Octane. The manual recommends 91 octane for full performance and allows 87. 87 will not harm the engine; the higher grade is a choice, not a requirement.
  • Fuel. The Grand Touring plug-in hybrid holds 11.2 gallons.