Tire, all, P235/50R17 front and P255/45R17 rear

Years 2005–08 Models 2 Factory citations 3

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Documented applications

CTS — Sigma / GMX320 (2003–2007)

2005 Factory-verified

2005 list only; also on the 2005 STS list.

GM factory document — 2005 cadillac cts rpo code list, p.1.

STS — Sigma (2005–2011)

2005–2008 Factory-verified

GM factory document — 2005 cadillac sts rpo code list, p.1.
GM factory document — 2008 cadillac sts rpo code list, p.1.

This page aggregates every documented appearance of Q11 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.