2019 Cadillac CT6 tire and wheel sizes, bolt pattern and tire pressure

Check the tables below for every tire size, wheel size, bolt pattern (PCD), rim offset and tire pressure fitted to the 2019 Cadillac CT6.

2019 Cadillac CT6 tire sizes

245/45R19 245/40R20 255/35R21 235/50R18

Bolt pattern

5x120

Other years

2016 2017 2018 2019 2020 2021 2022 2023 All 2016–2025

Fitment tables

4 trims sold in 2019

Open a trim for its factory package and every alternative size, front and rear.

Cadillac CT6 GM Omega II

2019 – 2023 USA market 4 trims

CT6 2.0T

237 hp · 2.0L B20NHT I4 235/50 R18 97V 3 fitments

GenerationGM Omega II 2019–2023

Power237 hp

Engine2.0L B20NHT I4, Petrol

Center bore66.9 mm

PCD5x120

ThreadM14 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
235/50 R18 97V	18x8 ET35 ~~5x120~~	33	Tires Rims
245/45 R19 98V	19x8.5 ET33 ~~5x120~~	33	Tires Rims
245/40 R20 95W	20x8.5 ET33 ~~5x120~~	36	Tires Rims

CT6 3.0T

404 hp · 3.0L LGW V6 245/45 R19 98V 3 fitments

GenerationGM Omega II 2019–2023

Power404 hp

Engine3.0L LGW V6, Petrol

Center bore66.9 mm

PCD5x120

ThreadM14 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/45 R19 98V	19x8.5 ET33 ~~5x120~~	33	Tires Rims
245/40 R20 95W	20x8.5 ET33 ~~5x120~~	36	Tires Rims
255/35 ZR21 98Y	21x9 ET30 ~~5x120~~	36	Tires Rims

CT6 3.6i

335 hp · 3.6L LGX V6 245/45 R19 98V 3 fitments

GenerationGM Omega II 2019–2023

Power335 hp

Engine3.6L LGX V6, Petrol

Center bore66.9 mm

PCD5x120

ThreadM14 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/45 R19 98V	19x8.5 ET33 ~~5x120~~	33	Tires Rims
245/40 R20 95W	20x8.5 ET33 ~~5x120~~	36	Tires Rims
255/35 ZR21 98Y	21x9 ET30 ~~5x120~~	36	Tires Rims

CT6 4.2T

500 hp · 4.2L LTA V8 245/45 R19 98V 3 fitments

GenerationGM Omega II 2019–2023

Power500 hp

Engine4.2L LTA V8, Petrol

Center bore66.9 mm

PCD5x120

ThreadM14 x 1.5

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/45 R19 98V	19x8.5 ET33 ~~5x120~~	33	Tires Rims
245/40 R20 95W	20x8.5 ET33 ~~5x120~~	36	Tires Rims
255/35 ZR21 98Y	21x9 ET30 ~~5x120~~	36	Tires Rims

Reading the table

What these columns mean

OE fitment: The package fitted at the factory for that trim.
Alternative: A size the car accepts without modification — plus-sizing, winter setups or optional wheels.
Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.