2020 Cadillac CT6-V tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120 on every 2020 trim.

Tires for the 2020 Cadillac CT6-V

Sizes most trims come with first. Open your trim below for its exact size.

245/40R20 Best-rated standard on 1 trim

Check price on Amazon · 245/40R20
245/45R19 Best-rated optional on 1 trim

Check price on Amazon · 245/45R19
255/35R21 Best-rated optional on 1 trim

Check price on Amazon · 255/35R21

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Trims sold in 2020: 1
Generation: GM Omega
Other years: 2019
2020
All years (2019–2020)

1 trim sold in 2020

Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

Cadillac CT6-V GM Omega

2019–2020 1 trim

CT6-V 4.2T 550 hp · 4.2L LTA V8 245/40R20 95Y 3 fitments

Generation: GM Omega · 2019–2020
Power: 550 hp
Engine: 4.2L LTA V8, Petrol
Center bore: 66.9 mm
Bolt pattern: 5x120
Thread: M14 x 1.5

Check price on Amazon · 245/40R20 Wheels 20x8.5 ET33 · 5x120 · 66.9 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
245/40R20 95Y	Rim 20x8.5 ET33 5x120	36 psi
245/45R19 98W	Rim 19x8.5 ET33 5x120	33 psi
255/35R21 95Y	Rim 21x9 ET30 5x120	36 psi

How to read 95Y: 95 is the load index (up to 1,521 lb / 690 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET33 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

What these columns mean

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.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.