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BigO Tire
Confirm Tire Size
Shopping for tires? Select tire size to proceed.
2025 Cadillac CT4 Sport
Cadillac equips your vehicle with more than one possible size during production. Please select the size installed on your vehicle from the choices below.
Original Equipment Wheel Diameter: 18"
235/40R18
Original Equipment Wheel Diameter: 19"
235/35R19
Where can I find my tire size?Where can I find my tire size?