1978 Opel Ascona tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 4x100 on every 1978 trim.

Tires for the 1978 Opel Ascona

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

165xR13 standard on 11 trims

Check price on Amazon · 165xR13
185/70R13 Best-rated optional on 11 trims

Check price on Amazon · 185/70R13
195/70R13 Best-rated optional on 11 trims

Check price on Amazon · 195/70R13

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Trims sold in 1978: 11
Generation: B
Other years: 1974
1975
1976
1977
1978
1979
1980
1981
All years (1970–1988)

11 trims sold in 1978

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

Opel Ascona B

1975–1981 11 trims

Ascona 1.2 N +4 variants 54 hp · 1.2L 12N I4 165x R13 82S 4 fitments

Same tires and wheels on: 1.2 S, 1.3 N, 1.3 S, 1.6 N

Generation: B · 1975–1981
Power: 54 hp
Engine: 1.2L 12N I4, Petrol
Center bore: 56.6 mm
Bolt pattern: 4x100
Thread: M12 x 1.5

Check price on Amazon · 165xR13 Wheels 13x5 ET37 · 4x100 · 56.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
165x R13 82S	Rim 13x5 ET37 ~~4x100~~	25 psi
165x R13 82S	Rim 13x5.5 ET37 ~~4x100~~	25 psi
185/70R13 84S	Rim 13x5.5 ET37 ~~4x100~~	25 psi
195/70R13 84S	Rim 13x5.5 ET37 ~~4x100~~	25 psi

How to read 82S: 82 is the load index (up to 1,047 lb / 475 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET37 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Ascona 1.6 S +5 variants 74 hp · 1.6L 16S I4 165x R13 82S 5 fitments

Same tires and wheels on: 1.9 N, 1.9 S, 2.0 D, 2.0 N, 2.0 S

Generation: B · 1975–1981
Power: 74 hp
Engine: 1.6L 16S I4, Petrol
Center bore: 56.6 mm
Bolt pattern: 4x100
Thread: M12 x 1.5

Check price on Amazon · 165xR13 Wheels 13x5 ET37 · 4x100 · 56.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
165x R13 82S	Rim 13x5 ET37 ~~4x100~~	25 psi
165x R13 82S	Rim 13x5.5 ET37 ~~4x100~~	25 psi
185/70R13 84S	Rim 13x5.5 ET37 ~~4x100~~	25 psi
195/70R13 84S	Rim 13x5.5 ET37 ~~4x100~~	25 psi
195/60R14 85H	Rim 14x6 ET37 ~~4x100~~	25 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.