FRENES

Pontiac Grand Am PCD

1964–1980
VERIFIED
⌀57.1
PCD5x100 or 5x120.65 or 5x115
Centre bore70.3 or 57.1 mm
Offset (ET)ET8 to ET42
Fixing typeEcrous - 12x1.50
Tightening torque135 Nm
Original tyres225/70R15, 205/70R13, 185/75R14, 215/60R15
⚠ This model comes with 5x100 or 5x120.65 or 5x115 depending on the year or version. Check on an original wheel or with a professional before buying anything.
Hub centric rings 57.1 mm → Wheel spacers 5x100(partner link) Change PCD (PCD adapter)(partner link) Sheet for your mechanic

Fitting wheels on a Pontiac Grand Am

A Pontiac Grand Am (1964–1980) uses a 5x100 or 5x120.65 or 5x115 PCD and a centre bore of 70.3 or 57.1 mm. Any wheel must match the vehicle's PCD exactly: there is no tolerance, unless you use a PCD adapter.

  • PCD: 5x100 or 5x120.65 or 5x115 required. See all vehicles with 5x100.
  • Centre bore: the wheel must have a centre bore of 57.1 mm or more. If it is larger (as with most aftermarket wheels), add a hub centric ring wheel centre bore → 57.1 mm.
  • Offset: the original is ET8 to ET42. 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 - 12x1.50, tightened to 135 Nm. The nuts or bolts must have the same seat (conical, spherical or flat) as the wheel.
  • Tyres: original fitment is 225/70R15, 205/70R13, 185/75R14, 215/60R15. For another size, check the diameter difference with the equivalence calculator (under 3 % recommended).

All recorded versions (4)

The original specs vary with the year, trim or wheel size. Identify your version from the tyre size marked on the sidewall.

VersionPCDCentre boreWheelOffsetTyre
Version 1 5x120.65 70.3 mm — ET8 225/70R15
Version 2 5x100 57.1 mm — ET42 205/70R13
Version 3 5x100 57.1 mm — ET41 185/75R14
Version 4 5x115 70.3 mm — ET42 215/60R15

Vehicles with the same PCD and centre bore

Same 5x100 PCD and same 57.1 mm centre bore: wheels from these vehicles bolt on and centre on a Pontiac Grand Am without rings. Offset, width, diameter and caliper clearance still need checking.

Pontiac Sunfire 1995–2005 Pontiac Sunbird 1988–1994 Pontiac Fiero 5x100 1984–1988 MG Astor from 2021 Skoda Fabia IV from 2021 Volkswagen Taigo from 2021 Skoda Kamiq GT from 2020 Audi A1 Citycarver 2019–2022 Skoda Kamiq from 2019 Skoda Scala from 2019 Volkswagen T-Cross from 2019 Seat Arona from 2017 Seat Ibiza V from 2017 Volkswagen Polo AW from 2017 Audi S1 2014–2018 Audi S1 Sportback 2014–2018

Will wheels from another vehicle fit your Grand Am?

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 Pontiac Grand Am?

A Pontiac Grand Am (1964–1980) can have a 5x100 or 5x120.65 or 5x115 PCD depending on the version: check on an original wheel.

Does a Pontiac Grand Am need a hub centric ring?

The centre bore (hub diameter) of a Pontiac Grand Am is 70.3 or 57.1 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 Pontiac Grand Am?

The recorded original offset is ET8 to ET42 depending on the version and wheel size. 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 Pontiac Grand Am?

The specified tightening torque is 135 Nm for Ecrous - 12x1.50 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 Pontiac Grand Am?

With the same PCD (5x100) and the same centre bore (57.1 mm), these include: Pontiac Sunfire, Pontiac Sunbird, Pontiac Fiero 5x100, MG Astor. 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.