2026 Acura RDX Wiper Sizes, Bulb Sizes & Tire Sizes

Last reviewed October 16, 2026

The short answer

The 2026 Acura RDX takes 26" driver and 18" passenger wiper blades (rear 12"), has sealed LED headlights with no replaceable low-beam bulb, and came on 235/55R19 (19-inch wheel models), 255/45R20 (20-inch wheel models) depending on trim.

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Wiper blade sizes

Driver side 26" Shop on Amazon
Passenger side 18" Shop on Amazon
Rear 12" Shop on Amazon

Tire sizes by trim

19-inch wheel models 235/55R19 101H · 33 psi Search Amazon for 235/55R19 tires
20-inch wheel models 255/45R20 101V · 36 psi Search Amazon for 255/45R20 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
Fog light Sealed LED, no replaceable bulb
Daytime running Sealed LED, no replaceable bulb
Front 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

Wheel specs and lug torque

Lug nut torque 80 ft-lbs (108 Nm)
Factory wheel sizes 19x8, 20x8

Key fob, battery and sensors

Key fob battery CR2032 Search Amazon for CR2032

Dimensions, weight and fuel

Fuel Gasoline
Octane 91 recommended, 87 allowed
Fuel tank 17.1 gal (65 L)

Worth knowing about the 2026 RDX

  • Wipers. Rain-X lists 9x3 hook arms for the front blades, and the rear blade size is not confirmed.
  • LED lighting. The low beam, high beam, fog light, daytime running, front turn signal, brake light, tail light, reverse light, license plate are sealed LED units with no user-replaceable bulb. A failure means replacing the assembly.
  • Bulbs. The rear turn signal is the only exterior light with a replaceable bulb, and its code is not confirmed.
  • 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. Chains go on the front tires only, and because clearance is limited the manual recommends QCC Cobra 1046 cables, while the T155/90D17 compact spare is not on every model.
  • Torque. Tighten lug nuts to 80 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 manual recommends 91 octane premium and warns that fuel below 87 octane can damage the engine.