2006 Buick GL8 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x115 on every 2006 trim.

Tires for the 2006 Buick GL8

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

225/60R16 Best-rated standard on 1 trim · optional on 1

Check price on Amazon · 225/60R16
215/70R15 Best-rated standard on 1 trim

Check price on Amazon · 215/70R15
225/55R17 Best-rated optional on 1 trim

Check price on Amazon · 225/55R17

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Trims sold in 2006: 2
Generation: I
Other years: 2005
2006
2007
2008
2009
2010
2011
2012
All years (2005–2026)

2 trims sold in 2006

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

Buick GL8 I

2005–2017 2 trims

GL8 2.4i 150 hp · 2.4L I4 215/70R15 98T 2 fitments

Generation: Facelift · 2005–2017
Power: 150 hp
Engine: 2.4L I4, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M12 x 1.5

Check price on Amazon · 215/70R15 Wheels 15x6 ET52 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
215/70R15 98T	Rim 15x6 ET52 ~~5x115~~	–
225/60R16 98H	Rim 16x6.5 ET51 ~~5x115~~	–

How to read 98T: 98 is the load index (up to 1,653 lb / 750 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET52 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

GL8 3.0i 176 hp · 3.0L V6 225/60R16 98H 2 fitments

Generation: Facelift · 2005–2017
Power: 176 hp
Engine: 3.0L V6, Petrol
Center bore: 70.3 mm
Bolt pattern: 5x115
Thread: M12 x 1.5

Check price on Amazon · 225/60R16 Wheels 16x6.5 ET51 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/60R16 98H	Rim 16x6.5 ET51 ~~5x115~~	–
225/55R17 97V	Rim 17x7 ET50 ~~5x115~~	–

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). 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.