tirewheelguide

2008 Cadillac CTS tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120 on every 2008 trim.

Tires for the 2008 Cadillac CTS

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

  1. 255/40R19 front + 285/35R19 rear Best-rated standard on 2 trims · Europe, USA
    Check price on Amazon · 255/40R19 front Check price on Amazon · 285/35R19 rear
  2. 235/50R18 Best-rated standard on 1 trim · optional on 3 · Europe, USA
    Check price on Amazon · 235/50R18
  3. 235/55R17 Best-rated standard on 1 trim · USA
    Check price on Amazon · 235/55R17

Also listed: 245/45R19 255/40R19

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Trims sold in 2008
4
Generation
GM Sigma II sold in 2 market versions

4 trims sold in 2008

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

Cadillac CTS GM Sigma II

2008–2014 4 trims

Europe

2 trims
CTS 2.8i 208 hp · 2.8L V6 255/40R19 96Y / 285/35R19 99Y 3 fitments
Generation
GM Sigma II · 2008–2014
Market
Europe
Power
208 hp
Engine
2.8L V6, Petrol
Center bore
66.9 mm
Bolt pattern
5x120
Thread
M14 x 1.5
Check price on Amazon · 255/40R19 Check price on Amazon · 285/35R19 Wheels 19x9 ET45 · 5x120 · 66.9 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front255/40R19 96YRim 19x9 ET45 5x12036 psi
Rear285/35R19 99YRim 19x9.5 ET45 5x12036 psi
235/50R18 97VRim 18x8 ET48 5x12036 psi
245/45R19 98YRim 19x8.5 ET48 5x12036 psi

How to read 96Y: 96 is the load index (up to 1,565 lb / 710 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

CTS 3.6i 307 hp · 3.6L LLT V6 235/50R18 97V 3 fitments
Generation
GM Sigma II · 2008–2014
Market
Europe
Power
307 hp
Engine
3.6L LLT V6, Petrol
Center bore
66.9 mm
Bolt pattern
5x120
Thread
M14 x 1.5
Check price on Amazon · 235/50R18 Wheels 18x8 ET48 · 5x120 · 66.9 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
235/50R18 97VRim 18x8 ET48 5x12036 psi
245/45R19 98YRim 19x8.5 ET48 5x12036 psi
255/40R19 96YRim 19x9.5 ET45 5x12036 psi

How to read 97V: 97 is the load index (up to 1,609 lb / 730 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET48 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

USA

2 trims
CTS 3.0i 270 hp · 3.0L LFW V6 235/55R17 98H 3 fitments
Generation
GM Sigma II · 2008–2014
Market
USA
Power
270 hp
Engine
3.0L LFW V6, Petrol
Center bore
66.9 mm
Bolt pattern
5x120
Thread
M14 x 1.5
Check price on Amazon · 235/55R17 Wheels 17x8 ET48 · 5x120 · 66.9 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
235/55R17 98HRim 17x8 ET48 5x12033 psi
235/50R18 97VRim 18x8 ET48 5x12036 psi
245/45R19 98WRim 19x8.5 ET48 5x12036 psi

How to read 98H: 98 is the load index (up to 1,653 lb / 750 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET48 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

CTS 3.6i 304 hp · 3.6L LLT V6 255/40R19 96Y / 285/35R19 99Y 3 fitments
Generation
GM Sigma II · 2008–2014
Market
USA
Power
304 hp
Engine
3.6L LLT V6, Petrol
Center bore
66.9 mm
Bolt pattern
5x120
Thread
M14 x 1.5
Check price on Amazon · 255/40R19 Check price on Amazon · 285/35R19 Wheels 19x9 ET45 · 5x120 · 66.9 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front255/40R19 96YRim 19x9 ET45 5x12036 psi
Rear285/35R19 99YRim 19x9.5 ET45 5x12036 psi
235/50R18 97VRim 18x8 ET48 5x12036 psi
245/45R19 98YRim 19x8.5 ET48 5x12036 psi

How to read 96Y: 96 is the load index (up to 1,565 lb / 710 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

What these columns mean
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.
Trims sold in 2008
4
Generation
GM Sigma II sold in 2 market versions
Other years
All years (2002–2019)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

Open the size calculator

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