1983 Alfa Romeo 33 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 4x98 on every 1983 trim.

Tires for the 1983 Alfa Romeo 33

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

165/70R13 Best-rated standard on 5 trims

Check price on Amazon · 165/70R13
165/65R14 Best-rated optional on 5 trims

Check price on Amazon · 165/65R14
175/60R14 Best-rated optional on 5 trims

Check price on Amazon · 175/60R14

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Trims sold in 1983: 5
Generation: 905
Other years: 1983
1984
1985
1986
1987
1988
1989
1990
All years (1983–1995)

5 trims sold in 1983

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

Alfa Romeo 33 905

1983–1989 5 trims

33 1.2 +4 variants 67 hp · AR30585 F4 165/70R13 79T 4 fitments

Same tires and wheels on: 1.3, 1.3 S, 1.5

Generation: 905 · 1983–1989
Power: 67 hp
Engine: AR30585 F4, Petrol
Center bore: 58.6 mm
Bolt pattern: 4x98
Thread: M12 x 1.25

Check price on Amazon · 165/70R13 Wheels 13x5 ET39 · 4x98 · 58.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
165/70R13 79T	Rim 13x5 ET39 4x98	26 psi
165/65R14 79T	Rim 14x5 ET39 4x98	26 psi
175/60R14 79T	Rim 14x5.5 ET40 4x98	26 psi
175/55R15 77H	Rim 15x5.5 ET40 4x98	29 psi

How to read 79T: 79 is the load index (up to 963 lb / 437 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.

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.