1998 Chevrolet Omega tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x110 on every 1998 trim.

Tires for the 1998 Chevrolet Omega

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

185/70R14 Best-rated standard on 1 trim · optional on 2

Check price on Amazon · 185/70R14
195/65R15 Best-rated standard on 1 trim

Check price on Amazon · 195/65R15
205/60R15 Best-rated standard on 1 trim

Check price on Amazon · 205/60R15

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Trims sold in 1998: 3
Generation: A
Other years: 1994
1995
1996
1997
1998
1999
2000
2001
All years (1992–2012)

3 trims sold in 1998

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

Chevrolet Omega A

1992–1998 3 trims

Omega 2.0i 128 hp · I4 Ethanol 185/70R14 88T 1 fitment

Generation: A · 1992–1998
Power: 128 hp
Engine: I4 Ethanol
Center bore: 65.1 mm
Bolt pattern: 5x110
Thread: M12 x 1.5

Check price on Amazon · 185/70R14 Wheels 14x6 ET39 · 5x110 · 65.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
185/70R14 88T	Rim 14x6 ET39 ~~5x110~~	29 psi

How to read 88T: 88 is the load index (up to 1,235 lb / 560 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET39 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Omega 2.2i 114 hp · I4 195/65R15 91H 2 fitments

Generation: A · 1992–1998
Power: 114 hp
Engine: I4, Petrol
Center bore: 65.1 mm
Bolt pattern: 5x110
Thread: M12 x 1.5

Check price on Amazon · 195/65R15 Wheels 15x6.5 ET33 · 5x110 · 65.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
195/65R15 91H	Rim 15x6.5 ET33 ~~5x110~~	32 psi
185/70R14 88T	Rim 14x6 ET39 ~~5x110~~	29 psi

How to read 91H: 91 is the load index (up to 1,356 lb / 615 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET33 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Omega 4.1i 166 hp · I6 205/60R15 91H 2 fitments

Generation: A · 1992–1998
Power: 166 hp
Engine: I6, Petrol
Center bore: 65.1 mm
Bolt pattern: 5x110
Thread: M12 x 1.5

Check price on Amazon · 205/60R15 Wheels 15x6.5 ET33 · 5x110 · 65.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
205/60R15 91H	Rim 15x6.5 ET33 ~~5x110~~	32 psi
185/70R14 88T	Rim 14x6 ET39 ~~5x110~~	29 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.