2018 Acura MDX Wiper Sizes, Bulb Sizes & Tire Sizes

Last reviewed September 30, 2026

The short answer

The 2018 Acura MDX takes 26" driver and 20" passenger wiper blades (rear 14"), has sealed LED headlights with no replaceable low-beam bulb, and rides on 245/60R18 tires as standard (Base); Technology Package and Advance Package use 245/50R20.

Wiper blade sizes

Driver side 26" · j-hook connector Shop on Amazon
Passenger side 20" · j-hook connector Shop on Amazon
Rear 14" Shop on Amazon

Tire sizes by trim

Base (standard) 245/60R18 105H · 35 psi See tires at Amazon
Technology Package, Advance Package 245/50R20 102H · 35 psi See tires at Amazon

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
Fog light Sealed LED, no replaceable bulb
Daytime running Sealed LED, no replaceable bulb
Front turn signal Sealed LED, no replaceable bulb
Rear turn signal 7440 Shop on Amazon
Brake light 7440 Shop on Amazon
Tail light Sealed LED, no replaceable bulb
Reverse light 7440 Shop on Amazon
License plate Sealed LED, no replaceable bulb

Wheel specs and lug torque

Bolt pattern 5x120 mm (5x4.72")
Lug nut torque 94 ft-lbs (127 Nm)
Factory wheel sizes 18x8, 20x8

Key fob, battery and sensors

Key fob battery CR2032 Shop on Amazon

Dimensions, weight and fuel

Fuel Gasoline
Octane 87 minimum, 91 recommended
Fuel tank 19.5 gal (74 L)

Worth knowing about the 2018 MDX

  • Connector. Both front blades use a j-hook connector. A blade of the right length with the wrong connector will not clip on, so check the connector before you buy.
  • Wipers. Rain-X lists a Rock Lock 3 arm for the 14 in rear blade.
  • LED lighting. The low beam, high beam, fog light, daytime running, front turn signal, tail light, license plate are sealed LED units with no user-replaceable bulb. A failure means replacing the assembly.
  • Bulbs. The LED fog lights are fitted only to some models.
  • Tire chains. The manual permits chains or cables, on the drive wheels only, fitted to the standard tire size. Chains for this size on Amazon →
  • Tires. Chains go on the front tires only, and because clearance is limited the manual recommends SCC Cable Chain Super Z LT ZT735 cables, while the T165/80D17 compact spare is not on every model.
  • Torque. Tighten lug nuts to 94 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 requires 87 octane and recommends 91 for full performance. Regular will not harm the engine; premium is a choice, not a requirement.
  • Fuel. The manual recommends 91 octane premium and warns that fuel below 87 octane can damage the engine.