tirewheelguide

1978 Chevrolet Corvette tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120.65 on every 1978 trim.

Tires for the 1978 Chevrolet Corvette

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

  1. 205/75R15 Best-rated standard on 3 trims
    Check price on Amazon · 205/75R15
  2. 225/70R15 Best-rated optional on 3 trims
    Check price on Amazon · 225/70R15
  3. 255/60R15 Best-rated optional on 3 trims
    Check price on Amazon · 255/60R15

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Trims sold in 1978
3
Generation
C3

3 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.

Chevrolet Corvette C3

1968–1982 3 trims
Corvette 5.7 350cid +2 variants 185 hp · V8 205/75R15 4 fitments

3 versions of this trim share these tires and wheels.

Generation
C3 · 1968–1982
Power
185 hp
Engine
V8, Petrol
Center bore
70.3 mm
Bolt pattern
5x120.65
Thread
7/16" - 20 UNF
Check price on Amazon · 205/75R15 Wheels 15x7 ET-2 · 5x120.65 · 70.3 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
205/75R15Rim 15x7 ET-2 5x120.65–
225/70R15Rim 15x7 ET-3 5x120.65–
225/70R15Rim 15x8 ET-1 5x120.65–
255/60R15Rim 15x8 ET-3 5x120.65–
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.
Trims sold in 1978
3
Generation
C3
Other years
All years (1953–2026)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

Open the size calculator

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