A Ford Falcon stud pattern is 5 studs on a 114.3 mm (4.5") pitch circle diameter (PCD), with 1/2" studs. Holden uses 7/16" studs: the HT pattern is 5 x 108 mm (4.25"), HQ is 5 x 120.65 mm (4.75") and Commodore is 5 x 120 mm. The stud pattern doesn't tell you which trailer bearings you need.
If you only needed the pattern, the chart below has it. If you're buying a trailer bearing kit, read the number on the old inner bearing first, then pick the Holden LM67048/LM11949 kit or the Ford L68149/LM12749 kit.
Stud pattern chart: Ford, Holden and common trailer hubs
PCD is the diameter of the imaginary circle that runs through the centre of every stud. A stud pattern is the number of studs, the PCD and the stud size together. "Stud to next stud" is the centre-to-centre gap between two neighbouring studs, the easiest thing to measure.
| Stud pattern | Studs | PCD (mm) | PCD (inches) | Stud thread | Stud to next stud |
|---|---|---|---|---|---|
| Ford (Falcon) | 5 | 114.3 | 4.5 | 1/2" UNF (12.7 mm) | 67.2 mm |
| Holden HT | 5 | 108 (107.95) | 4.25 | 7/16" UNF (11.1 mm) | 63.5 mm |
| Holden HQ | 5 | 120.65 | 4.75 | 7/16" UNF (11.1 mm) | 70.9 mm |
| Holden Commodore | 5 | 120 | 4.72 | 7/16" UNF (11.1 mm); 12 mm also common | 70.5 mm |
| Holden Gemini (and Honda) | 4 | 100 | 3.94 | 7/16" UNF | 70.7 mm |
| Holden Torana | 4 | 101.6 | 4 | 7/16" UNF | 71.8 mm |
| Leyland Mini | 4 | 101.6 | 4 | 7/16" UNF | 71.8 mm |
| Datsun | 4 | 114.3 | 4.5 | 7/16" UNF | 80.8 mm |
| Ford 4 stud | 4 | 114.3 | 4.5 | 1/2" | 80.8 mm |
| Ford F100 | 5 | 139.7 | 5.5 | 1/2" UNF; 12 mm also common | 82.1 mm |
| Land Rover, Range Rover | 5 | 165.1 | 6.5 | 5/8" UNF (Defender also 9/16" UNF) | 97.0 mm |
| Toyota Landcruiser 5 stud | 5 | 150 | 5.91 | 9/16" UNF; 14 mm also common | 88.2 mm |
| Toyota Landcruiser 6 stud, Nissan | 6 | 139.7 | 5.5 | 1/2" UNF; 12 mm also common | 69.9 mm |
Source: an axle maker's published stud pattern chart (PCD and stud thread), see Sources, read 28 September 2026. Millimetre conversions and the stud-to-next-stud column are worked out with the PCD formula in the steps below. The Torana and Ford 4 stud rows are our own figures; they aren't in the maker's chart.
Ford vs Holden stud pattern: the quick way to tell
Count the studs, then measure one stud across its thread with vernier callipers. A Ford stud is 1/2" (12.7 mm). A Holden stud is 7/16" (11.1 mm). That gap of about 1.6 mm is easy to see on a calliper, even though a real stud usually reads a little under its nominal size.
Then measure the gap between two neighbouring studs. On a 5 stud hub, about 63.5 mm is HT, about 67.2 mm is Ford and about 70.9 mm is HQ. Those three are less than 4 mm apart, so measure centre to centre, not by eye.
HQ and Commodore are only 0.65 mm apart in PCD (120.65 against 120 mm). A tape measure can't separate them. They're two separate drilling patterns, so treat them as different and confirm with the vehicle or the wheel's own marking before you swap wheels between them.
Is the BA, AU, EL or FG Falcon stud pattern different?
We haven't found a Ford document that lists the Falcon's PCD by model. The axle maker's stud pattern chart behind our table has one row labelled "Ford", 5 x 4.5" with 1/2" UNF studs, and Falcon owners on Ford forums report the same 5 x 114.3 mm pattern across the generations, with only the wheel offset changing (owner experience, not a Ford specification). Check the stud size on the car itself before you buy wheels or nuts.
The stud pattern doesn't tell you the bearings
This is where people order the wrong trailer kit. The stud pattern is only how the hub is drilled. AL-KO, an Australian axle and hub maker, sells one standard 150 mm flange hub drilled Ford, HT, Commodore or HQ, and each of those can be fitted with Holden (LM) or Ford (SL) bearings. Its boxed hub kits include a Ford-drilled hub with Holden (LM) bearings, and HT and HQ hubs with Ford (SL) bearings.
So a trailer with a Ford stud pattern can run Holden bearings, and a Holden stud pattern can run Ford bearings. What decides the bearings is the stub axle. Read the number on the old inner cone (LM67048 is Holden, L68149 is Ford), or measure the bearing seat on the axle. Our guide Holden or Ford trailer bearings? How to tell walks through both checks.
Some trailers have a Holden inner bearing and a Ford outer bearing on the same hub. That's a composite set, and it needs a composite kit.
Difference between Ford and Holden trailer hubs
On AL-KO's standard trailer hubs, the Ford, HT, HQ and Commodore versions are the same hub with different drilling: 150 mm flange, 60.9 mm outer boss and LM or SL bearings. The difference is the PCD and the stud size, not the casting.
Four stud trailer hubs are smaller. AL-KO's Gemini/Honda hub (4 x 100 mm) has a 53 mm machined outer boss and takes LM bearings only.
How to measure a PCD
You need vernier callipers. Take the wheel off so you can see the hub face.
- Count the studs. 4, 5 or 6.
- Measure the stud diameter across the thread: about 12.7 mm is 1/2", about 11.1 mm is 7/16", about 14.3 mm is 9/16", about 15.9 mm is 5/8".
- Measure "A", from the centre of one stud to the centre of the stud next to it. If centres are hard to find, measure from the left edge of one stud to the left edge of the next. With studs the same size, that's the same distance.
- Work out the PCD:
- 4 studs: A divided by 0.7071, or measure straight across from one stud centre to the opposite stud centre.
- 5 studs: A divided by 0.5878. There's no opposite stud on a 5 stud hub, so measuring straight across won't give you the PCD.
- 6 studs: A divided by 0.5, or measure straight across from one stud centre to the opposite stud centre.
- Match it to the chart. Example: 67 mm between neighbouring studs on a 5 stud hub, divided by 0.5878, is 114 mm. That's the Ford 114.3 mm pattern.
Measure carefully: accurate measurements are critical to getting the correct PCD.
When to get a mechanic
Don't fit a wheel whose stud pattern or stud thread only nearly matches the hub. If the numbers fall between two patterns, or the studs are bent, stretched or have damaged threads, get a tyre shop, trailer workshop or mechanic to check the hub before it goes back on the road. The same goes for the bearings: most of our kit listings say all parts should be fitted by a licensed professional to vehicle specifications.
Which kit fits
Once the bearing number or axle measurement tells you Holden, Ford or composite:
- Pick the 2x standard Holden kit LM67048/LM11949 for both wheels of a road trailer with Holden bearings, whatever the stud pattern.
- Pick the Ford kit L68149/LM12749 for one wheel of a road trailer with Ford (slimline) bearings.
- Pick the 2x composite Ford/Holden kit LM67048/LM12749 if your inner cone reads LM67048 and your outer reads LM12749.
- Pick the 2x marine Holden kit for a Holden boat trailer. The bearings are the same as the standard kit; the seals are marine seals.
Working on the car, not the trailer? The Holden trailer set is the same pair of bearings (LM67048 and LM11949) as our 2x front wheel bearing kits for Holden HQ to WB and Commodore VB to VP. For early Falcons there's the KOYO 2x front wheel bearing kits for Falcon EA to EL.
More kits, including single, marine and KOYO versions, are in the trailer bearing collection. If you'd like help identifying what you need, contact us.
Questions people also ask
What is the difference between Ford and Holden stud patterns?
Ford uses 1/2" studs on a 114.3 mm (4.5") PCD. Holden uses 7/16" studs on 108 mm (HT), 120.65 mm (HQ) or 120 mm (Commodore). Both are 5 stud, so measure the stud diameter and the gap between neighbouring studs.
How do I tell if my trailer has Ford or Holden hubs?
Measure a stud: about 12.7 mm is a Ford pattern, about 11.1 mm is Holden. That tells you the wheel drilling only. For the bearings, read the number on the inner cone or measure the axle.
If I use a Ford hub on a Holden axle, do I need Holden bearings?
Yes. The bearings follow the axle, not the drilling. AL-KO sells Ford-drilled hubs fitted with Holden (LM) bearings for exactly this.
What is the HQ Holden stud pattern and PCD?
HQ is 5 studs on a 4.75" (120.65 mm) PCD with 7/16" UNF studs. Neighbouring studs are about 70.9 mm apart, centre to centre.
What is the HT Holden stud pattern?
HT is 5 studs on a 4.25" (107.95 mm, usually called 108 mm) PCD with 7/16" UNF studs. Neighbouring studs are about 63.5 mm apart.
Is a Commodore the same stud pattern as an HQ?
No, but it's close: Commodore is 5 x 120 mm and HQ is 5 x 120.65 mm, both 7/16" UNF. They're separate patterns, and 12 mm is also a common Commodore stud thread.
Related reading
- Holden or Ford trailer bearings? How to tell
- Trailer bearing sizes: Holden, Ford and the other Australian kits
- Parallel trailer bearings
Sources
- AL-KO, Vehicle Technology catalogue 2020, "AL-KO Stud Pattern Chart" and "How to measure a PCD", p. 4, https://alko.com.au/wp-content/uploads/2024/06/ALKO-VT-catalogue-2020-opt.pdf, read 28 September 2026.
- AL-KO, "How to measure a PCD" (06/2024), https://alko.com.au/wp-content/uploads/2024/06/AL-KO-How-to-measure-a-PCD.pdf, read 28 September 2026.
- AL-KO, Hubs catalogue pages 73 to 75 (standard hubs, galvanised hubs, boxed hub kits), https://alko.com.au/wp-content/uploads/2020/05/Lazy-Hubs.pdf, read 28 September 2026.
- Ford XR6 Turbo forum, "Stud Pattern Ba Falcon Pcd?", owner posts from February 2006, https://www.fordxr6turbo.com/forum/topic/23458-stud-pattern-ba-falcon-pcd/, read 28 September 2026 (owner experience).
Checked against AL-KO's stud pattern chart, PCD guide and hub catalogue and Bearings Express product data on 28 September 2026.
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