Tire, all, P235/60R18 front and P255/55R18 rear

Years 2004–09 Models 1 Factory citations 2

Documented applications

SRX — Sigma / GMT265 (2004–2009)

2004–2009 Factory-verified

The 2004, 2005 and 2007 lists print 6OR18 with a letter O; the size is 60R18, as the 2006, 2008 and 2009 lists read.

GM factory document — 2004 cadillac srx rpo code list, p.1.
GM factory document — 2009 cadillac srx rpo code list, p.1.

This page aggregates every documented appearance of Q16 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.