Tires, P235/50R18, V-rated, all-season, blackwall

Years 2012–13, 2016 Models 2 Factory citations 1

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Also described as Tires, P235/50R18 all-season, blackwall, V-rated

Also documented for Cadillac

Documented applications

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2012 Confirmed

2012: part of PCQ (GM Authority 2012 RPO list)
2013 Single-source

2013: standard on 1SR, no longer in PCQ (GM Authority 2013 changes); single-source for 2013: GM Authority 2013 changes does not credit GM

Regal — Epsilon II, 5th gen (2011–2017)

2016 Factory-verified

2016: 1SV, 1SL, 1SN, 1SP: S; not with LUK

GM factory document — 2016 buick regal order guide copy gm authority, p.5, p.21.
2012 Single-source

no longer available on the 4GR69 models for 2013 (GM Authority 2013 changes); single-source: GM Authority 2013 changes does not credit GM

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