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2026 Cadillac Optiq 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 2026 Cadillac Optiq.

2026 Cadillac Optiq tire sizes

245/55R19245/50R20275/40R21
Bolt pattern
Other years
2023202420252026 All 2023–2026
Fitment tables

2 trims sold in 2026

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

Cadillac Optiq Optiq

2023 – 2027 2 trims

Optiq Dual Motor (SUV, 5d)

440 hp · Electric 245/50 R20 3 fitments
GenerationOptiq 2023–2027
MarketUSA
Power440 hp
EngineElectric, Electric
Center bore66.9 mm
PCD6x120
ThreadM14 x 1.5
FitTire sizeRim size and bolt patternPressure, psiPrices
OE245/50 R2020x8.5 ET55 6x12042TiresRims
Alt245/55 R1919x8.5 ET55 6x12039TiresRims
Alt275/40 R2121x9 ET57 6x12045TiresRims

Optiq Single Motor (SUV, 5d)

315 hp · Electric 245/50 R20 3 fitments
GenerationOptiq 2023–2027
MarketUSA
Power315 hp
EngineElectric, Electric
Center bore66.9 mm
PCD6x120
ThreadM14 x 1.5
FitTire sizeRim size and bolt patternPressure, psiPrices
OE245/50 R2020x8.5 ET55 6x12042TiresRims
Alt245/55 R1919x8.5 ET55 6x12039TiresRims
Alt275/40 R2121x9 ET57 6x12045TiresRims
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.

Considering a different size?

Run your OE size against the one you want to see diameter change, ground clearance and speedometer error.

Open the size calculator
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