Sizes of Tires and Rims for the Cadillac STS


STS GM Sigma ll (2008-2012)

Tire size Tire pressure Rim size Wheel fastener Center bore
235/50 R17 2.1 bar 7.5Jx17 ET51 Nuts: 5 x 115 (PCD) 70.3 mm
235/50 R17 2.1 bar 7.5Jx17 ET51 Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/50 Z R17
Rear: 255/45ZR17
2.1 bar Front: 7.5Jx17 ET51
Rear: 8Jx17 ET51
Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/50 Z R17
Rear: 255/45ZR17
2.1 bar Front: 7.5Jx17 ET51
Rear: 8Jx17 ET51
Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/50 Z R18
Rear: 255/45ZR18
2.1 bar 8Jx18 ET51 Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/50 Z R18
Rear: 255/45ZR18
2.1 bar 8Jx18 ET51 Nuts: 5 x 115 (PCD) 70.3 mm
Front: 245/40 Z R19
Rear: 275/35ZR19
Front: 2.2 bar
Rear: 2.4 bar
Front: 8Jx19 ET45
Rear: 9Jx19 ET45
Nuts: 5 x 115 (PCD) 70.3 mm
Front: 245/40 Z R19
Rear: 275/35ZR19
Front: 2.2 bar
Rear: 2.4 bar
Front: 8Jx19 ET45
Rear: 9Jx19 ET45
Nuts: 5 x 115 (PCD) 70.3 mm
More sizes

STS-V GM Sigma (2005-2009)

Tire size Tire pressure Rim size Wheel fastener Center bore
255/45 R18 2.1 bar 8Jx18 ET51 Nuts: 6 x 115 (PCD) 70.3 mm
Front: 255/45 Z R18
Rear: 275/40ZR19
Front: 2.1 bar
Rear: 2.3 bar
Front: 8.5Jx18 ET51
Rear: 9.5Jx19 ET56
Nuts: 6 x 115 (PCD) 70.3 mm
Front: 255/40 Z R19
Rear: 275/40ZR19
Front: 2.2 bar
Rear: 2.4 bar
Front: 8.5Jx19 ET51
Rear: 9.5Jx19 ET56
Nuts: 6 x 115 (PCD) 70.3 mm
Front: 255/40 Z R19
Rear: 285/35ZR20
Front: 2.2 bar
Rear: 2.4 bar
Front: 9Jx19 ET45
Rear: 10Jx20 ET45
Nuts: 6 x 115 (PCD) 70.3 mm

STS GM Sigma I (2004-2007)

Tire size Tire pressure Rim size Wheel fastener Center bore
235/50 R17 2.1 bar 7.5Jx17 ET51 Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/50 R17
Rear: 255/45R17
2.1 bar Front: 7.5Jx17 ET51
Rear: 8Jx17 ET51
Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/50 Z R18
Rear: 255/45ZR18
2.1 bar 8Jx18 ET51 Nuts: 5 x 115 (PCD) 70.3 mm
Front: 235/40 Z R19
Rear: 265/35ZR19
Front: 2.2 bar
Rear: 2.4 bar
Front: 8Jx19 ET50
Rear: 8.5Jx19 ET50
Nuts: 5 x 115 (PCD) 70.3 mm

STS GM Sigma ll (2008-2012)

Tire size
235/50 R17
Tire pressure
2.1 bar
Rim size
7.5Jx17 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
235/50 R17
Tire pressure
2.1 bar
Rim size
7.5Jx17 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/50 Z R17
Rear: 255/45ZR17
Tire pressure
2.1 bar
Rim size
Front: 7.5Jx17 ET51
Rear: 8Jx17 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/50 Z R17
Rear: 255/45ZR17
Tire pressure
2.1 bar
Rim size
Front: 7.5Jx17 ET51
Rear: 8Jx17 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/50 Z R18
Rear: 255/45ZR18
Tire pressure
2.1 bar
Rim size
8Jx18 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/50 Z R18
Rear: 255/45ZR18
Tire pressure
2.1 bar
Rim size
8Jx18 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 245/40 Z R19
Rear: 275/35ZR19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
Front: 8Jx19 ET45
Rear: 9Jx19 ET45
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 245/40 Z R19
Rear: 275/35ZR19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
Front: 8Jx19 ET45
Rear: 9Jx19 ET45
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
More sizes

STS-V GM Sigma (2005-2009)

Tire size
255/45 R18
Tire pressure
2.1 bar
Rim size
8Jx18 ET51
Wheel fastener
Nuts: 6 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 255/45 Z R18
Rear: 275/40ZR19
Tire pressure
Front: 2.1 bar
Rear: 2.3 bar
Rim size
Front: 8.5Jx18 ET51
Rear: 9.5Jx19 ET56
Wheel fastener
Nuts: 6 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 255/40 Z R19
Rear: 275/40ZR19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
Front: 8.5Jx19 ET51
Rear: 9.5Jx19 ET56
Wheel fastener
Nuts: 6 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 255/40 Z R19
Rear: 285/35ZR20
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
Front: 9Jx19 ET45
Rear: 10Jx20 ET45
Wheel fastener
Nuts: 6 x 115 (PCD)
Center bore
70.3 mm
More sizes

STS GM Sigma I (2004-2007)

Tire size
235/50 R17
Tire pressure
2.1 bar
Rim size
7.5Jx17 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/50 R17
Rear: 255/45R17
Tire pressure
2.1 bar
Rim size
Front: 7.5Jx17 ET51
Rear: 8Jx17 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/50 Z R18
Rear: 255/45ZR18
Tire pressure
2.1 bar
Rim size
8Jx18 ET51
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
Tire size
Front: 235/40 Z R19
Rear: 265/35ZR19
Tire pressure
Front: 2.2 bar
Rear: 2.4 bar
Rim size
Front: 8Jx19 ET50
Rear: 8.5Jx19 ET50
Wheel fastener
Nuts: 5 x 115 (PCD)
Center bore
70.3 mm
More sizes