1979 Chevrolet Blazer tire and wheel sizes, bolt pattern and tire pressure

Bolt patterns 5x127 or 6x139.7, depending on the market version.

Tires for the 1979 Chevrolet Blazer

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

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Open a trim for its tire and rim sizes, bolt pattern and tire pressure. Trims with the same tires and wheels share a row.

1996–2000 7 trims

Blazer 4.1 2WD 130 hp · I6 215/75R15 2 fitments

Check price on Amazon · 215/75R15 Wheels 15x7 ET-10 · 5x127 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
215/75R15	Rim 15x7 ET-10 ~~5x127~~	–
225/75R15	Rim 15x7 ET-10 ~~5x127~~	–

Blazer 4.1 4WD +1 variant 130 hp · I6 235/75R15 2 fitments

Same tires and wheels on: 5.7 4WD

Check price on Amazon · 235/75R15 Wheels 15x6 ET0 · 6x139.7 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/75R15	Rim 15x6 ET0 ~~6x139.7~~	–
225/75R15	Rim 15x7 ET-10 ~~6x139.7~~	–

Blazer 5.0 2WD +1 variant 140 hp · V8 225/75R15 1 fitment

Same tires and wheels on: 5.7 2WD

Check price on Amazon · 225/75R15 Wheels 15x7 ET-10 · 5x127 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/75R15	Rim 15x7 ET-10 ~~5x127~~	–

Blazer 5.0 4WD +1 variant 140 hp · V8 235/75R15 2 fitments

Same tires and wheels on: 6.6 4WD

Check price on Amazon · 235/75R15 Wheels 15x6 ET0 · 6x139.7 · 78.3 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
235/75R15	Rim 15x6 ET0 ~~6x139.7~~	–
235/75R15	Rim 15x7 ET-10 ~~6x139.7~~	–

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.