4x100 bolt pattern: cars, centre bore and 4x100 forged wheels
A 4x100 bolt pattern means 4 fixing holes spaced around a circle 100 mm in diameter, measured at the centre of the holes. It is also written “100/4”, “LK 100/4” and “4 x 100”. The PCD (bolt pattern) is the first measurement of a wheel: it must be exactly that of the car. It is not enough on its own: the centre bore, the thread and the seat of the bolts must match too. PCD and centre bore: how the wheel is fixed, the Academy lesson, explains them.
Below, the 3 generations of cars we cover whose 4x100 bolt pattern is established by our sources, with their original fixing measurements. A car that is not listed may still be 4x100: we publish only what we have recorded and sourced.
Cars with a 4x100 bolt pattern and their original fixing measurements
Each value refers, by a number, to the sources that give it. These are the measurements of the car as originally supplied, to identify yours; our design office works out those of your wheels and submits them to you before machining.
| Car | PCD | Centre bore | Thread | Fixing | Bolt or nut seat |
|---|---|---|---|---|---|
| Mazda MX-5 NB, 1998-2005 | 4x100 [1, 2, 3] | 54.1 mm [1, 2, 3] | M12 x 1.5 [1, 2, 3] | Wheel nuts [1, 2, 3] | Not published |
| Mazda MX-5 ND, since 2015 | 4x100 [4, 5, 6] | 54.1 mm [4, 5, 6, 7] | M12 x 1.5 [4, 5, 6] | Wheel nuts [4, 5, 6] | Not published |
| MINI Cooper R56, 2006-2014 | 4x100 [8, 9, 10] | 56.1 mm [8, 9, 10] | M14 x 1.25 [8, 9, 10] | Wheel bolts [8, 9, 10] | Not published |
“Not published”: no source sure enough to show it yet. The original fitments, version by version, with their original offsets (manufacturer), are on each car's page.
Same bolt pattern, which centre bore? The hub-centric ring
In 4x100, our cars share 2 centre bores: 54.1 mm (Mazda MX-5 NB and Mazda MX-5 ND); 56.1 mm (MINI Cooper R56).
A hub-centric ring brings a wheel's centre bore down to the diameter of the hub. It is only needed if the wheel is bored wider than the hub; if it is narrower, the centre bore does not fit over the hub.
| Wheel centre bore | Car's hub | Centring |
|---|---|---|
| 54.1 mm | 56.1 mm (MINI Cooper R56) | does not fit: the wheel's centre bore is smaller than the hub |
| 56.1 mm | 54.1 mm (Mazda MX-5 NB and Mazda MX-5 ND) | hub-centric ring 56.1 → 54.1 mm |
An Onyx wheel is machined to the PCD and the centre bore of the car it is made for: it centres on the hub with no ring or spacer.
Same bolt pattern, same bolts?
- Thread: M12 x 1.5 (Mazda MX-5 NB and Mazda MX-5 ND); M14 x 1.25 (MINI Cooper R56).
- Fixing: wheel bolts (MINI Cooper R56); wheel nuts (Mazda MX-5 NB and Mazda MX-5 ND).
- Seat: not published for Mazda MX-5 NB, Mazda MX-5 ND and MINI Cooper R56.
Two cars with the same bolt pattern can therefore need different bolts or nuts: they are chosen for the car, never for the bolt pattern.
What Onyx can make in 4x100
Custom forged wheels in 6061-T6 aluminium, designed to JWL/VIA standards, in monoblock or two-piece; three-piece wheels are made on quotation.
The diameters below are those of our price list, from 18-inch to 24-inch; the smallest original diameter found on these cars is 14-inch. The smallest possible diameter depends on each car and its brakes: it is given on the page for yours, and the Onyx Forged design office checks it before machining.
| Diameter | Monoblock, set of four | Monoblock, Great Britain | Two-piece, set of four | Two-piece, Great Britain |
|---|---|---|---|---|
| 18-inch | €3,200 | £3,271.20 with UK import VAT | €4,300 | £4,395.60 with UK import VAT |
| 19-inch | €3,200 | £3,271.20 with UK import VAT | €4,300 | £4,395.60 with UK import VAT |
| 20-inch | €3,300 | £3,373.20 with UK import VAT | €4,400 | £4,497.60 with UK import VAT |
| 21-inch | €3,550 | £3,628.80 with UK import VAT | €4,750 | £4,855.20 with UK import VAT |
| 22-inch | €3,750 | £3,832.80 with UK import VAT | €5,200 | £5,314.80 with UK import VAT |
| 23-inch | €3,950 | £4,038 with UK import VAT | €5,750 | £5,877.60 with UK import VAT |
| 24-inch | €4,100 | £4,190.40 with UK import VAT | €6,300 | £6,439.20 with UK import VAT |
For Great Britain, our checkout charges in pounds sterling. It converts the euro price at its exchange rate on the day, currency conversion charge included, so the amount in pounds is about 2% more than a straight conversion at the market rate; the amount shown at checkout is the one charged for your order. The amounts in pounds on this page are those of 13 November 2026. Delivery is free, and UK import VAT (20%) applies to the whole amount in pounds. The carrier collects the VAT before delivery, together with its clearance fee (for example, DHL Express charges £11 or 2.5% of the duty and VAT it pays, whichever is higher) and any import duty. Any import duty depends on the UK tariff in force when your wheels arrive: the amount you pay is the one on the carrier's notice, and UK import VAT then applies to it too. The details are on our Delivery to Great Britain page.
Wheels delivered in 4 to 8 working weeks, transit time included, from full payment, whether you order on the website or on quotation (or from the agreed deposit, if you asked for one), and at the earliest from your approval of the measurements, the colour or the 3D render you asked for, under article 5.1 of the Terms and Conditions.
The offset and the width of your wheels are not those of a table: the Onyx Forged design office calculates them for your car and your brakes, and submits them to you for approval before machining.
Comparing two wheels with the same bolt pattern
With the same bolt pattern, it is the offset and the width that place the wheel in the arch. Wheel offset calculator: it compares your current fitment with another, to the millimetre, and recommends no measurement.
Bolt patterns: cars by PCD · Open atlas of OE wheel measurements
The other bolt patterns of our cars
Sources of the measurements
- koleso.ee, Mazda MX-5 NB [1998 .. 2005] (secondary source, accessed on 8 November 2026)
- SCC Fahrzeugtechnik (spurverbreiterung.de), Mazda MX5, type NB, 1998-2005 (secondary source, accessed on 8 November 2026)
- wheelfitment.eu, Mazda MX-5 (1990 - 2005) (secondary source, accessed on 8 November 2026)
- koleso.ee, Mazda MX-5 IV (ND) [2015 .. 2026], 96 to 135 kW (secondary source, accessed on 21 October 2026)
- SCC Fahrzeugtechnik (spurverbreiterung.de), Mazda MX5 ND, 2015 onwards (secondary source, accessed on 21 October 2026)
- wheelfitment.eu, Mazda MX-5 (2015 - ) (secondary source, accessed on 21 October 2026)
- hubcentric-rings.com, Mazda MX-5 (“ND (2015–)” row) (secondary source, accessed on 21 October 2026)
- koleso.ee, MINI Cooper R56 [2006 .. 2014] (secondary source, accessed on 8 November 2026)
- SCC Fahrzeugtechnik (spurverbreiterung.de), MINI John Cooper Works inkl. Cabrio (R56, R57), types MINI-N, UKL-C, 2008-2014 (secondary source, accessed on 8 November 2026)
- SCC Fahrzeugtechnik (spurverbreiterung.de), MINI One inkl. Cabrio (R56, R57), types MINI-N, UKL-C, 2007-2014 (secondary source, accessed on 8 November 2026)
Publication rule: a measurement is published only when a primary source gives it (a manufacturer's document, an official record from a road authority, an original equipment (OE) parts catalogue, the maker of the OE wheel) and no other primary source contradicts it, or when two independent specialist sources agree and no primary source contradicts them. The press and forums do not count. Measurements checked on 8 November 2026 by the Onyx Forged design office.