RD1 ✓ Factory-verified

Buick · Regular Production Option

Wheels, 18" (45.7 cm) aluminum

Years 2018–19 Models 1 Factory citations 2

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Also documented for Chevrolet

Documented applications

Regal — E2XX (2018–2020) →

• 2018–2019 ✓ Factory-verified

  only in: Sportback; 2019: Preferred II, Essence: S (2019 Sportback order guide); the 2019 guide adds machine-faced with painted pockets

  ⛭ GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.

  ⛭ GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.

This page aggregates every documented appearance of RD1 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.