Alfa Romeo Spider Bolt Pattern, Center Bore & Wheel Offset (1967–2006)
Alfa Romeo Spider wheel fitment: 4x108 bolt pattern, 70.1mm center bore (1967–1990); 5x110 bolt pattern, 65.1mm center bore. OE wheel sizes and offsets for ev
- 4x108bolt pattern (PCD), most common
- 70.1 mmcenter bore
- M12x1.5 Nutwheel bolt / nut
- 7 guidesmodel years 1967–2006
Bolt pattern by generation
- 4x108, 70.1 mm center bore — 1967–1990 (4 variants)
- 5x110, 65.1 mm center bore — 2006 (2 variants)
- 5x98, 58.1 mm center bore — 2003 (1 variants)
Alfa Romeo Spider wheel specs by year and trim
| Year | Model / trim | Bolt pattern | Center bore | OE wheel |
|---|---|---|---|---|
| 2006 | Alfa Romeo Spider | 5x110 | 65.1 mm | 17x7.5J |
| 2006 | Alfa Romeo Spider [UK] | 5x110 | 65.1 mm | 17x7.5J |
| 2003 | Alfa Romeo Spider (916 Facelift) | 5x98 | 58.1 mm | 16x7.0J |
| 1990 | Alfa Romeo Spider (Series 4) | 4x108 | 70.1 mm | 14x6.0J |
| 1983 | Alfa Romeo Spider (Series 3) | 4x108 | 70.1 mm | 14x6.0J |
| 1970 | Alfa Romeo Spider (Series 2 "Round Tail") | 4x108 | 70.1 mm | 14x5.5J |
| 1967 | Alfa Romeo Spider (Series 1 "Duetto") | 4x108 | 70.1 mm | 15x4.5J |
Factory wheel sizes on the Alfa Romeo Spider
Across the 7 Alfa Romeo Spider trims with a documented factory wheel, the OE diameter is 14-17 inch, width 4.5-7.5J. A forged wheel that keeps the bolt pattern and hub bore of your generation (see the table above) and matches the factory offset listed on the model page 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.
Vehicles With the Same Hub as the Alfa Romeo Spider (4x108, 70.1 mm Bore)
No other make in our database pairs 4x108 with a 70.1 mm center bore, so wheels taken from other brands need a hub-centric ring or a custom bore.
4x108 is used by 2.6% of the vehicle entries in our database (171 of 6,503); 2.3% of those also use a 70.1 mm center bore.
Hub-Centric Rings for a 70.1 mm Center Bore
A wheel with a center bore larger than 70.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 70.5 mm | 70.5 → 70.1 mm |
| 71.6 mm | 71.6 → 70.1 mm |
| 72.6 mm | 72.6 → 70.1 mm |
| 73.1 mm | 73.1 → 70.1 mm |
ANKUSI forged wheels are bored to exactly 70.1 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 Alfa Romeo Spider?
The Alfa Romeo Spider uses a 4x108 bolt pattern on most variants we cover with a 70.1mm center bore. Other generations use 5x110 / 65.1mm (2006–2006), 5x98 / 58.1mm (2003–2003). Always check the exact year and trim before ordering.
What is the Alfa Romeo Spider center bore?
The hub-centric center bore is 70.1 mm on the most common generation; see the table for variants. Aftermarket wheels should match this bore or use hub-centric rings so the hub, not the bolts, carries the load.
Do all Alfa Romeo Spider years share the same wheel fitment?
No. The bolt pattern or center bore changed between generations, so wheels are not interchangeable across all years. Use the year-by-year table on this page to pick the right specification.
Which forged wheels fit the Alfa Romeo Spider?
Any wheel drilled 4x108 with a 70.1mm 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.