Sizes of Tires and Rims for the Cadillac


CT6 GM Omega II (2019-2021)

Tire size Tire pressure Rim size Wheel fastener Center bore
235/50 R18 Front: 2.1 bar
Rear: 2.2 bar
8Jx18 ET35 Nuts: 5 x 120 (PCD) 66.9 mm
245/45 R19 Front: 2.2 bar
Rear: 2.4 bar
8.5Jx19 ET33 Nuts: 5 x 120 (PCD) 66.9 mm
245/40 ZR20 Front: 2.2 bar
Rear: 2.4 bar
8.5Jx20 ET33 Nuts: 5 x 120 (PCD) 66.9 mm
255/35 ZR21 Front: 2.4 bar
Rear: 2.6 bar
9Jx21 ET30 Nuts: 5 x 120 (PCD) 66.9 mm

CT6-V GM Omega (2019-2021)

Tire size Tire pressure Rim size Wheel fastener Center bore
245/45 ZR19 Front: 2.2 bar
Rear: 2.4 bar
8.5Jx19 ET33 Nuts: 5 x 120 (PCD) 66.9 mm
245/40 ZR20 Front: 2.2 bar
Rear: 2.4 bar
8.5Jx20 ET33 Nuts: 5 x 120 (PCD) 66.9 mm
255/35 ZR21 Front: 2.4 bar
Rear: 2.6 bar
9Jx21 ET30 Nuts: 5 x 120 (PCD) 66.9 mm

CT6 GM Omega I (2016-2018)

Tire size Tire pressure Rim size Wheel fastener Center bore
235/50 R18 Front: 2.1 bar
Rear: 2.2 bar
8Jx18 ET35 Nuts: 5 x 120 (PCD) 66.9 mm
Front: 235/50 R18
Rear: 265/45R18
Front: 2.5 bar
Rear: 2.7 bar
Front: 8Jx18 ET35
Rear: 9Jx18 ET35
Nuts: 5 x 120 (PCD) 66.9 mm
245/45 R19 Front: 2.2 bar
Rear: 2.4 bar
8.5Jx19 ET33 Nuts: 5 x 120 (PCD) 66.9 mm
Front: 235/45 Z R19
Rear: 265/40ZR19
Front: 2.5 bar
Rear: 2.7 bar
Front: 8Jx19 ET35
Rear: 9Jx19 ET35
Nuts: 5 x 120 (PCD) 66.9 mm
245/40 ZR20 Front: 2.2 bar
Rear: 2.4 bar
8.5Jx20 ET33 Nuts: 5 x 120 (PCD) 66.9 mm

CT6 GM Omega II (2019-2021)

Tire size
235/50 R18
Tire pressure
Front: 2.1 bar
Rear: 2.2 bar
Rim size
8Jx18 ET35
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
245/45 R19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
8.5Jx19 ET33
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
245/40 ZR20
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
8.5Jx20 ET33
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
255/35 ZR21
Tire pressure
Front: 2.4 bar
Rear: 2.6 bar
Rim size
9Jx21 ET30
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
More sizes

CT6-V GM Omega (2019-2021)

Tire size
245/45 ZR19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
8.5Jx19 ET33
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
245/40 ZR20
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
8.5Jx20 ET33
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
255/35 ZR21
Tire pressure
Front: 2.4 bar
Rear: 2.6 bar
Rim size
9Jx21 ET30
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm

CT6 GM Omega I (2016-2018)

Tire size
235/50 R18
Tire pressure
Front: 2.1 bar
Rear: 2.2 bar
Rim size
8Jx18 ET35
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
Front: 235/50 R18
Rear: 265/45R18
Tire pressure
Front: 2.5 bar
Rear: 2.7 bar
Rim size
Front: 8Jx18 ET35
Rear: 9Jx18 ET35
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
245/45 R19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
8.5Jx19 ET33
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
Front: 235/45 Z R19
Rear: 265/40ZR19
Tire pressure
Front: 2.5 bar
Rear: 2.7 bar
Rim size
Front: 8Jx19 ET35
Rear: 9Jx19 ET35
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
Tire size
245/40 ZR20
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
8.5Jx20 ET33
Wheel fastener
Nuts: 5 x 120 (PCD)
Center bore
66.9 mm
More sizes