2008 Mercury Grand Marquis tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x114.3 on every 2008 trim.

Tires for the 2008 Mercury Grand Marquis

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

225/60R17 Best-rated standard on 2 trims · USA, Middle East

Check price on Amazon · 225/60R17
235/60R16 Best-rated optional on 2 trims · USA, Middle East

Check price on Amazon · 235/60R16
235/55R17 Best-rated optional on 2 trims · USA, Middle East

Check price on Amazon · 235/55R17

Also listed: 235/50R18

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Trims sold in 2008: 2
Generation: IV sold in 2 market versions
Other years: 2004
2005
2006
2007
2008
2009
2010
2011
All years (1979–2011)

2 trims sold in 2008

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

Mercury Grand Marquis IV

2003–2011 2 trims

Middle East

1 trim

Grand Marquis 4.6i 224 hp · 4.6L V8 225/60R17 99H 6 fitments

Generation: IV · 2003–2011
Market: Middle East
Power: 224 hp
Engine: 4.6L V8, Petrol
Center bore: 70.5 mm
Bolt pattern: 5x114.3
Thread: 1/2" - 20 UNF

Check price on Amazon · 225/60R17 Wheels 17x7 ET54 · 5x114.3 · 70.5 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/60R17 99H	Rim 17x7 ET54 ~~5x114.3~~	33 psi
235/60R16 99H	Rim 16x7 ET54 ~~5x114.3~~	32 psi
235/55R17 99H	Rim 17x7 ET54 ~~5x114.3~~	32 psi
225/60R17 99H	Rim 17x7.5 ET44 ~~5x114.3~~	32 psi
235/55R17 99H	Rim 17x7.5 ET44 ~~5x114.3~~	32 psi
235/50R18 97V	Rim 18x7.5 ET44 ~~5x114.3~~	32 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). ET54 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

USA

1 trim

Grand Marquis 4.6i 232 hp · 4.6L V8 225/60R17 99H 6 fitments

Generation: IV · 2003–2011
Market: USA
Power: 232 hp
Engine: 4.6L V8, Petrol
Center bore: 70.5 mm
Bolt pattern: 5x114.3
Thread: 1/2" - 20 UNF

Check price on Amazon · 225/60R17 Wheels 17x7 ET54 · 5x114.3 · 70.5 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/60R17 99H	Rim 17x7 ET54 ~~5x114.3~~	33 psi
235/60R16 99H	Rim 16x7 ET54 ~~5x114.3~~	32 psi
235/55R17 99H	Rim 17x7 ET54 ~~5x114.3~~	32 psi
225/60R17 99H	Rim 17x7.5 ET44 ~~5x114.3~~	32 psi
235/55R17 99H	Rim 17x7.5 ET44 ~~5x114.3~~	32 psi
235/50R18 97V	Rim 18x7.5 ET44 ~~5x114.3~~	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.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.