FIAT 124 Spider Bolt Pattern
Catalog records for FIAT 124 Spider use a 4×100 bolt pattern.
Figures come from the wheel catalog. Confirm them on the vehicle before buying hardware.
Bolt-pattern specs
Bolt pattern
Wheel hardware
Choose your vehicle details where needed to see the most relevant catalog matches.
Lug hardware
- M12 x 1.5 lug nutsM12 x 1.5Shop on Amazon
Wheel lockMCGARD Chrome Cone Seat M12 x 1.5 Wheel LocksView on Amazon
Covers, studs and tools
- lug nut coversM12 x 1.5Shop on Amazon
- M12 x 1.5 wheel studsM12 x 1.5Shop on Amazon
- wheel center caps54.1 mmShop on Amazon
What do you need?
Change bolt pattern
Current pattern: 4×100 (4×3.94). Pick a target pattern. These are catalog conversions, not recommended wheels.
Choose thickness for your clearance setup. Thickness is not recommended automatically.
What else should I check?
Adapter thickness affects wheel position, offset, clearance, and stud engagement. Confirm load rating before installation. Hub swaps and redrilling are not equivalent shortcuts.
Hub rings
Vehicle hub: 54.1 mm. A ring is only needed when the wheel center bore is larger than this hub.
Catalog-covered wheel bores for this hub. Enter the bore stamped on the wheel — this is not a claim that your wheel uses that size.
Required ring: 73.1 → 54.1 mm
What else should I check?
A hub ring only fills a wheel bore larger than the hub. It does not change bolt pattern, offset, or a too-small wheel bore.
Matching hub-centric rings
Looking up catalog products…
Wheel spacers
Spacers keep 4×100 and move the wheel outward. Pick a thickness that has catalog rows for this pattern.
What else should I check?
Thickness affects offset, clearance, and stud engagement. Matching the bolt pattern is not a vehicle-fit claim.
What should I verify?
- Bolt pattern: 4×100
- Thread: M12 x 1.5
- Center bore: 54.1 mm
- Fastener type: Lug nuts
- Torque — use the stored manufacturer value when present
- Seat style — verify on your wheel
- Offset/clearance — verify for wheel/adapters
- Load rating — verify for vehicle/wheel
Bolt pattern by year range
| Years | Bolt pattern | Center bore | Thread |
|---|---|---|---|
| 2017–2020 | 4×100 | 54.1 mm | M12 x 1.5 |
Frequently asked questions
What is the bolt pattern on a FIAT 124 Spider?
Catalog records for the FIAT 124 Spider use a 4×100 bolt pattern.
What years use 4×100 on the FIAT 124 Spider?
Catalog records show 4×100 for 2017–2020 (4 years).
How many lugs does the FIAT 124 Spider have?
Catalog records show 4 lugs (4×100).
What does 4×100 mean?
4×100 means 4 lug positions on a 100 mm pitch circle. The first number is lug count; the second is the pitch circle diameter in millimetres.
What is the FIAT 124 Spider center bore?
Catalog records show 54.1 mm.
What thread size does the FIAT 124 Spider use?
Catalog records show M12 x 1.5.
Does the FIAT 124 Spider use lug nuts or lug bolts?
Catalog records for the FIAT 124 Spider list lug nuts with M12 x 1.5 thread.
Is 4×100 the same as 4×3.94?
Yes. 4×100 and 4×3.94 describe the same bolt circle: 4 lugs on 100 mm (3.94 in). Use either notation when comparing wheels.
Can I use wheels with a different bolt pattern on a FIAT 124 Spider?
Only with a bolt-on wheel adapter from the vehicle pattern (4×100) to the wheel pattern. Adapters are directional. Confirm thickness, center bore, thread, stud engagement, clearance, and load rating. Hub swaps and redrilling are not equivalent shortcuts.
What adapter do I need to change from 4×100 to another pattern?
You need a directed adapter whose source pattern is 4×100 and whose target pattern matches the wheels. 4×100 to another circle is not the same as the reverse unless the catalog lists both directions. Pick the target on this page; thickness is not chosen automatically.
What wheel spacers fit this bolt pattern?
Spacers must match the vehicle bolt pattern (4×100). Choose thickness for clearance and offset. Matching the pattern is not a claim that a given spacer fits the vehicle.
Do I need hub-centric rings on a FIAT 124 Spider?
Only when the wheel center bore is larger than the vehicle hub. Catalog records show 54.1 mm. Rings fill that gap. They do not fix every vibration issue and they do not change bolt pattern.
What hub ring size do I need for a FIAT 124 Spider?
The ring is wheel center bore (outer) to vehicle hub (inner). Enter the bore stamped on the wheel. Catalog matches are exact outer and inner millimetres, not nearby sizes.
Can a hub ring make a smaller wheel bore fit a larger hub?
No. A hub ring only fills a wheel bore that is larger than the hub. A smaller wheel bore cannot be opened with a ring.
What lug nuts should I buy for a FIAT 124 Spider?
Match the recorded thread. Catalog records show M12 x 1.5. Fastener type: lug nuts. Seat style and length are not in this catalog — confirm those on the wheel before ordering.
Can I use the same lug nuts on aftermarket wheels?
Thread must match, but aftermarket wheels often need a different seat style or length. Matching thread is not enough by itself. Catalog records show M12 x 1.5.
How do I measure a bolt pattern?
For even lug counts such as 4, measure from the center of one hole to the center of the hole directly opposite. That distance is the pitch circle (100 mm for 4×100).
Where can I find the bolt pattern on the FIAT 124 Spider?
Check the owner’s manual, a tire/wheel placard, or measure the hub. This page lists catalog records for the FIAT 124 Spider; it does not invent a stamp location on the vehicle.
Related models
More FIAT models: FIAT directory · 124 Spider canonical