Chevrolet Corvette C3 PCD

1968–1982
VERIFIED
⌀70.3
Centre bore70.3 mm
Offset (ET)ET2
Fixing typeEcrous - 7/16 - 20 U
Tightening torque108 Nm

Fitting wheels on a Chevrolet Corvette C3

A Chevrolet Corvette C3 (1968–1982) uses a 5x120.65 PCD and a centre bore of 70.3 mm. Any wheel must match the vehicle's PCD exactly: there is no tolerance, unless you use a PCD adapter.

  • PCD: 5x120.65 required. See all vehicles with 5x120.65.
  • Centre bore: the wheel must have a centre bore of 70.3 mm or more. If it is larger (as with most aftermarket wheels), add a hub centric ring wheel centre bore → 70.3 mm.
  • Offset: the original is ET2. Compare your future wheel with the offset calculator (your vehicle is already selected) to see how many millimetres further in or out it will sit.
  • Fixings: thread Ecrous - 7/16 - 20 U, tightened to 108 Nm. The nuts or bolts must have the same seat (conical, spherical or flat) as the wheel.

Vehicles with the same PCD and centre bore

Same 5x120.65 PCD and same 70.3 mm centre bore: wheels from these vehicles bolt on and centre on a Chevrolet Corvette C3 without rings. Offset, width, diameter and caliper clearance still need checking.

Will wheels from another vehicle fit your Corvette C3?

Choose the vehicle the wheels come from: we compare the hub, then each original wheel to the millimetre.

Frequently asked questions

What is the PCD of a Chevrolet Corvette C3?

A Chevrolet Corvette C3 (1968–1982) has a PCD of 5x120.65: 5 studs or bolts spaced around a circle 120.65 mm in diameter.

Does a Chevrolet Corvette C3 need a hub centric ring?

The centre bore (hub diameter) of a Chevrolet Corvette C3 is 70.3 mm. A wheel with a larger centre bore is fitted with a hub centric ring that brings it down to the hub diameter. A wheel with a smaller centre bore cannot be fitted.

What offset (ET) for a Chevrolet Corvette C3?

The recorded original offset is ET2. A lower ET pushes the wheel outwards, a higher ET pulls it inwards: check wheel well and caliper clearance before making any change.

What tightening torque for the wheels of a Chevrolet Corvette C3?

The specified tightening torque is 108 Nm for Ecrous - 7/16 - 20 U fixings. Tighten in a criss-cross pattern with a torque wrench and check the tightness again after about fifty kilometres.

Which vehicles have the same PCD as a Chevrolet Corvette C3?

With the same PCD (5x120.65) and the same centre bore (70.3 mm), these include: Chevrolet Corvette C7, Chevrolet Corvette C6, Chevrolet Jimny, Chevrolet Corvette C5. Offset, width and rim diameter still need checking for each vehicle.

Does a value look wrong, or is a version missing? Let us know, we check every report.