QES ✓ Factory-verified

Cadillac · Regular Production Option

Tires, 255/35ZR20, all-season, run-flat

Years 2025–26 Models 1 Factory citations 8

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Also documented for ChevroletGMCOldsmobile

Documented applications

CT5 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

  Premium Luxury, Sport: O; V-Series: O; V-Series Blackwing: not available

  ⛭ GM factory document — 2025 cadillac ct5 fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 cadillac ct5 fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 cadillac ct5 fleet order guide, p.25.

  ⛭ GM factory document — 2026 cadillac ct5 fleet order guide, p.26.

  ⛭ GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide, p.30.

  ⛭ GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide, p.31.

Related codes · mentioned in these notes

OV

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