2026 Cadillac CT4 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x115 on every 2026 trim.

Tires for the 2026 Cadillac CT4

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

225/45R17 Best-rated standard on 2 trims · optional on 1 · USA, China

Check price on Amazon · 225/45R17
235/40R18 Best-rated standard on 1 trim · optional on 2 · USA, China

Check price on Amazon · 235/40R18
235/40R18 front + 265/35R18 rear Best-rated optional on 3 trims · USA, China

Check price on Amazon · 235/40R18 front Check price on Amazon · 265/35R18 rear

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Sold in 2 market versions with different tire sizes. Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

2020–2027 3 trims

2 trims

CT4 2.0T (Saloon) 237 hp · 2.0 L LSY I4 Petrol 2.0 L LSY I4 225/45R17 6 fitments

Check price on Amazon · 225/45R17 Wheels 17x8 ET32 · 5x115 · 70.3 mm on Amazon

Fit	Tire size	Rim size and bolt pattern	Pressure, psi
OE	225/45R17	Rim 17x8 ET32 5x115	–
OE	235/40R18	Rim 18x8 ET35 5x115	–
Alt	Front235/40R18	Rim 18x8 ET35 5x115	–
	Rear265/35R18	Rim 18x8.5 ET40 5x115	–
Alt	235/40R18	Rim 18x8 ET35 5x115	–
Alt	Front235/35R19	Rim 19x8 ET35 5x115	–
	Rear265/30R19	Rim 19x9 ET40 5x115	–
Alt	235/35R19	Rim 19x8 ET35 5x115	–

CT4 2.7T (Saloon) 310 hp · 2.7 L L3B I4 Petrol 2.7 L L3B I4 235/40R18 6 fitments

Check price on Amazon · 235/40R18 Wheels 18x8 ET35 · 5x115 · 70.3 mm on Amazon

Fit	Tire size	Rim size and bolt pattern	Pressure, psi
OE	235/40R18	Rim 18x8 ET35 5x115	–
Alt	225/45R17	Rim 17x8 ET32 5x115	–
Alt	Front235/40R18	Rim 18x8 ET35 5x115	–
	Rear265/35R18	Rim 18x8.5 ET40 5x115	–
Alt	235/40R18	Rim 18x8 ET35 5x115	–
Alt	Front235/35R19	Rim 19x8 ET35 5x115	–
	Rear265/30R19	Rim 19x9 ET40 5x115	–
Alt	235/35R19	Rim 19x8 ET35 5x115	–

1 trim

CT4 1.5T (Saloon) 208 hp · 1.5 L I4 Petrol 1.5 L I4 225/45R17 6 fitments

Check price on Amazon · 225/45R17 Wheels 17x8 ET32 · 5x115 · 70.3 mm on Amazon

Fit	Tire size	Rim size and bolt pattern	Pressure, psi
OE	225/45R17	Rim 17x8 ET32 5x115	–
Alt	235/40R18	Rim 18x8 ET35 5x115	–
Alt	235/40R18	Rim 18x8 ET35 5x115	–
Alt	Front235/40R18	Rim 18x8 ET35 5x115	–
	Rear265/35R18	Rim 18x8.5 ET40 5x115	–
Alt	235/35R19	Rim 19x8 ET35 5x115	–
Alt	Front235/35R19	Rim 19x8 ET35 5x115	–
	Rear265/30R19	Rim 19x9 ET40 5x115	–

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.