1990 Pontiac Grand Prix tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x115 on every 1990 trim.

Tires for the 1990 Pontiac Grand Prix

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

Also listed: 245/50R16

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

1988–1996 3 trims

Grand Prix 2.3i 161 hp · I4 195/75SR14 2 fitments

Check price on Amazon · 195/75R14 Wheels 14x5.5 ET38 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
195/75SR14	Rim 14x5.5 ET38 ~~5x115~~	–
205/70SR15	Rim 15x6 ET42 ~~5x115~~	–

Grand Prix 3.1i 134 hp · V6 205/70SR15 2 fitments

Check price on Amazon · 205/70R15 Wheels 15x6 ET42 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
205/70SR15	Rim 15x6 ET42 ~~5x115~~	–
215/60HR16	Rim 16x6.5 ET42 ~~5x115~~	–

Grand Prix 3.1i Turbo 205 hp · V6 215/60HR16 2 fitments

Check price on Amazon · 215/60R16 Wheels 16x6.5 ET42 · 5x115 · 70.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
215/60HR16	Rim 16x6.5 ET42 ~~5x115~~	–
245/50VR16	Rim 16x8 ET50 ~~5x115~~	–

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.