Wheels, 18 x 8 aluminum, multi-spoke, Blade Silver painted finish

Years 2014, 2016–18 Models 3 Factory citations 5

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Also described as Wheels, 18 x 8 machined finishWheels, 18 x 8 painted cast aluminum

Also documented for Chevrolet

Documented applications

ATS — Alpha (2013–2019)

2014, 2018 Factory-verified

aluminum in 2014, alloy in 2018

GM factory document — 2014 cadillac ats fleet order guide wayback, p.7.
GM factory document — 2018 cadillac ats sedan fleet order guide wayback, p.3.

CT6 — Omega (2016–2020)

2017–2018 Factory-verified

upgradeable to RT9 or Q6M; 2018 from the 2018 CT6 order guide (a GM document); the 2019 guide prints no entry for it

GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.3.
GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.6.
GM factory document — 2018 cadillac ct6 order guide copy gm authority, p.52.

SRX — Theta Premium / GMT166 (2010–2016)

2016 Confirmed

Standard: S; deleted when any 20 inch LPO wheels are ordered; GM's 2016 SRX order guide (GM Authority's copy, published September 18, 2015)

This page aggregates every documented appearance of RT4 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.