1998 Mercury Grand Marquis tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x114.3 on every 1998 trim.

Tires for the 1998 Mercury Grand Marquis

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

225/60R16 Best-rated standard on 1 trim

Check price on Amazon · 225/60R16
235/60R16 Best-rated optional on 1 trim

Check price on Amazon · 235/60R16
225/55R17 Best-rated optional on 1 trim

Check price on Amazon · 225/55R17

Also listed: 235/55R17

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Trims sold in 1998: 1
Generation: III
Other years: 1994
1995
1996
1997
1998
1999
2000
2001
All years (1979–2011)

1 trim sold in 1998

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

Mercury Grand Marquis III

1998–2002 1 trim

Grand Marquis 4.6i 232 hp · 4.6L V8 225/60R16 98T 6 fitments

Generation: III · 1998–2002
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 · 225/60R16 Wheels 16x7 ET12 · 5x114.3 · 70.5 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/60R16 98T	Rim 16x7 ET12 ~~5x114.3~~	32 psi
225/60R16 98H	Rim 16x7 ET6 ~~5x114.3~~	32 psi
235/60R16 100T	Rim 16x7 ET6 ~~5x114.3~~	32 psi
225/55R17 97H	Rim 17x7 ET12 ~~5x114.3~~	32 psi
235/55R17 99H	Rim 17x7 ET12 ~~5x114.3~~	32 psi
235/55R17 99H	Rim 17x7.5 ET0 ~~5x114.3~~	32 psi

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). ET12 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

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.