Lancia Beta Bolt Pattern, Center Bore & Wheel Offset (1975)
Lancia Beta wheel fitment: 4x98 bolt pattern, 58.1mm center bore. OE wheel sizes and offsets for every Beta variant we cover (2 guides), plus flush and maximu
- 4x98bolt pattern (PCD)
- 58.1 mmcenter bore
- M12x1.25 Boltwheel bolt / nut
- 2 guidesmodel years 1975
Lancia Beta wheel specs by year and trim
| Year | Model / trim | Bolt pattern | Center bore | OE wheel |
|---|---|---|---|---|
| 1975 | Lancia Beta | 4x98 | 58.1 mm | 14x5.5J ET35 |
| 1975 | Lancia Beta Spider | 4x98 | 58.1 mm | 14x5.5J ET35 |
Factory wheel sizes on the Lancia Beta
Across the 2 Lancia Beta trims with a documented factory wheel, the OE diameter is 14 inch, width 5.5J and offset ET35. A forged wheel that keeps the 4x98 bolt pattern and the 58.1 mm hub bore and stays inside that offset range bolts on without spacers or hub rings. Going one inch up in diameter with a lower-profile tyre keeps the rolling circumference inside the usual 1.5% tolerance; every extra 0.5J of width moves the outer lip about 6 mm outward at the same offset, and each 5 mm less offset moves the whole wheel 5 mm outward.
Forged wheels for the Lancia Beta (4x98)
Shop all Lancia Beta forged wheels →
Get a quote for Lancia Beta wheels
Vehicles With the Same Hub as the Lancia Beta (4x98, 58.1 mm Bore)
In our database, 30 other vehicle entries from 8 makes use exactly the same 4x98 bolt pattern and 58.1 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
4x98 is used by 1.1% of the vehicle entries in our database (74 of 6,503); 73.0% of those also use a 58.1 mm center bore.
Offset and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 14x5.5J | ET35 | 4.63 in (118 mm) | — | — |
| Flush | 15x7J | ET25 | 4.98 in (127 mm) | +9 mm | +29 mm |
| Maximum | 16x7.5J | ET20 | 5.04 in (128 mm) | +10 mm | +40 mm |
Hub-Centric Rings for a 58.1 mm Center Bore
A wheel with a center bore larger than 58.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 60.1 mm | 60.1 → 58.1 mm |
| 63.4 mm | 63.4 → 58.1 mm |
| 64.1 mm | 64.1 → 58.1 mm |
| 65.1 mm | 65.1 → 58.1 mm |
| 73.1 mm | 73.1 → 58.1 mm |
ANKUSI forged wheels are bored to exactly 58.1 mm for this vehicle, so no ring is needed.
Sources and Last Update
Bolt pattern and center bore were checked against at least two independent fitment references before publication.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.
FAQ
What is the bolt pattern on a Lancia Beta?
The Lancia Beta uses a 4x98 bolt pattern with a 58.1mm center bore across every Beta variant in our database (2 guides, 1975).
What is the Lancia Beta center bore?
The hub-centric center bore is 58.1 mm. Aftermarket wheels should match this bore or use hub-centric rings so the hub, not the bolts, carries the load.
Do all Lancia Beta years share the same wheel fitment?
The bolt pattern and center bore are the same across the years we cover, but OE wheel width and offset differ by trim, so check the exact model line before choosing an aftermarket size.
Which forged wheels fit the Lancia Beta?
Any wheel drilled 4x98 with a 58.1mm hub bore in the offset range shown on the model guide. ANKUSI forges wheels to order for this exact specification, in 14–24 inch diameters, so no adapters or hub rings are needed.