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

Bolt pattern 5x115 on every 2008 trim.

Tires for the 2008 Cadillac DTS

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

235/55R17 Best-rated standard on 2 trims

Check price on Amazon · 235/55R17
235/50R18 Best-rated optional on 2 trims

Check price on Amazon · 235/50R18
245/50R18 Best-rated optional on 1 trim

Check price on Amazon · 245/50R18

Also listed: 255/45R18 255/40R19 265/40R19

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Trims sold in 2008: 2
Generation: GM G
Other years: 2006
2007
2008
2009
2010
2011
All years (2006–2011)

2 trims sold in 2008

Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

Cadillac DTS GM G

2006–2011 2 trims

DTS 4.6i 271 hp · 4.6L LD8 V8 235/55R17 99H 4 fitments

Generation: GM G · 2006–2011
Power: 271 hp
Engine: 4.6L LD8 V8, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M12 x 1.5

Check price on Amazon · 235/55R17 Wheels 17x7 ET46 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/55R17 99H	Rim 17x7 ET46 5x115	33 psi
235/50R18 99H	Rim 18x7.5 ET51 5x115	33 psi
245/50R18 99V	Rim 18x8 ET50 5x115	33 psi
255/40R19 97W	Rim 19x8.5 ET47 5x115	36 psi

How to read 99H: 99 is the load index (up to 1,709 lb / 775 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET46 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

DTS 4.6i 296 hp · 4.6L L37 V8 235/55R17 99H 4 fitments

Generation: GM G · 2006–2011
Power: 296 hp
Engine: 4.6L L37 V8, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M12 x 1.5

Check price on Amazon · 235/55R17 Wheels 17x7.5 ET51 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/55R17 99H	Rim 17x7.5 ET51 5x115	33 psi
235/50R18 99V	Rim 18x7.5 ET51 5x115	33 psi
255/45R18 99W	Rim 18x9 ET41 5x115	36 psi
265/40R19 97W	Rim 19x9 ET45 5x115	36 psi

How to read 99H: 99 is the load index (up to 1,709 lb / 775 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET51 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.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.