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

Bolt pattern 6x115 on every 2008 trim.

Tires for the 2008 Cadillac SRX

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

235/65R17 front + 255/60R17 rear Best-rated standard on 2 trims

Check price on Amazon · 235/65R17 front Check price on Amazon · 255/60R17 rear
235/60R18 front + 255/55R18 rear Best-rated optional on 2 trims

Check price on Amazon · 235/60R18 front Check price on Amazon · 255/55R18 rear
235/55R20 front + 255/50R20 rear Best-rated optional on 2 trims

Check price on Amazon · 235/55R20 front Check price on Amazon · 255/50R20 rear

Also listed: 255/50R20

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Trims sold in 2008: 2
Generation: GMT265
Other years: 2004
2005
2006
2007
2008
2009
2010
2011
All years (2004–2017)

2 trims sold in 2008

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

Cadillac SRX GMT265

2003–2009 2 trims

SRX 3.6i 255 hp · 3.6L LY7 V6 235/65R17 104H / 255/60R17 106H 4 fitments

Generation: GMT265 · 2003–2009
Power: 255 hp
Engine: 3.6L LY7 V6, Petrol
Center bore: 70.3 mm
Bolt pattern: 6x115
Thread: M12 x 1.5

Check price on Amazon · 235/65R17 Check price on Amazon · 255/60R17 Wheels 17x7.5 ET51 · 6x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front235/65R17 104H	Rim 17x7.5 ET51 ~~6x115~~	32 psi
Rear255/60R17 106H	Rim 17x7.5 ET51 ~~6x115~~	32 psi
Front235/60R18 103V	Rim 18x8 ET51 ~~6x115~~	32 psi
Rear255/55R18 105V	Rim 18x8 ET51 ~~6x115~~	32 psi
Front235/55R20 105V	Rim 20x8 ET50 ~~6x115~~	32 psi
Rear255/50R20 109V	Rim 20x8.5 ET50 ~~6x115~~	32 psi
255/50R20 109V	Rim 20x8 ET51 ~~6x115~~	32 psi

How to read 104H: 104 is the load index (up to 1,984 lb / 900 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.

SRX 4.6i 321 hp · 4.6L LH2 V8 235/65R17 104H / 255/60R17 106H 4 fitments

Generation: GMT265 · 2003–2009
Power: 321 hp
Engine: 4.6L LH2 V8, Petrol
Center bore: 70.3 mm
Bolt pattern: 6x115
Thread: M12 x 1.5

Check price on Amazon · 235/65R17 Check price on Amazon · 255/60R17 Wheels 17x7.5 ET51 · 6x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front235/65R17 104H	Rim 17x7.5 ET51 ~~6x115~~	32 psi
Rear255/60R17 106H	Rim 17x7.5 ET51 ~~6x115~~	32 psi
Front235/60R18 103V	Rim 18x8 ET51 ~~6x115~~	32 psi
Rear255/55R18 105V	Rim 18x8 ET51 ~~6x115~~	32 psi
Front235/55R20 105V	Rim 20x8 ET50 ~~6x115~~	32 psi
Rear255/50R20 109V	Rim 20x9 ET50 ~~6x115~~	32 psi
255/50R20 109V	Rim 20x8 ET51 ~~6x115~~	32 psi

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.