Custom forged wheels for Cupra
Custom forged wheels for Cupra, based on the original measurements of each generation, sources cited. 6061-T6 aluminium, designed to JWL/VIA standards.
Why choose Onyx Forged for Cupra
- Forged 6061-T6 aluminium
- 5-axis CNC machining
- Designed to JWL/VIA standards
- Fitment worked out for your Cupra
Cupra wheels: the measurements of your generation, with their sources
The PCD (bolt pattern), the centre bore, the wheel fixing and the fitments change from one Cupra model to another, and from one version to the next within the same model. We only show one if a source gives it: a manufacturer document, a vehicle type record, an original parts catalogue, or two independent specialist sources that agree. The measurements are published generation by generation, on the page for each car, where each measurement cites its source. The pages are those of the Cupra Formentor, the Cupra Leon and the electric Cupra Born.
A sports car: brakes, load and offset
On a sports car, three measurements govern the wheel. The brake diameter sets the smallest possible diameter (wheels and brakes (page in French)). The load each wheel carries sets what the wheel must withstand, and the tyre must keep at least the load index of the original fitment: each generation's page gives the permissible axle load and the index of the original tyres, with their source. Finally, the offset positions the wheel in the wheel arch. To compare two fitments, the tyre size equivalence tool checks that the rolling circumference stays close, and the offset calculator compares the position of two wheels: these tools compare, they do not recommend any offset.
Why we record your car's measurements
An Onyx wheel is machined to the PCD and centre bore of the car it is made for: it centres on the hub with no ring or spacer. Enter your model, its model year and its version in the configurator: the Onyx Forged design office records the measurements, calculates the width and offset for your car and your brakes, and submits them to you before machining.
An Onyx forged wheel is 5-axis CNC machined from a block of forged 6061-T6 aluminium, instead of being cast in a mould, and designed to JWL/VIA standards. The forged, cast or flow formed page explains what this changes for weight and strength, and the unsprung mass (page in French) guide what a lighter wheel changes. Price and lead time each have their own page: custom forged wheel prices and lead time.
Frequently asked questions about Cupra wheels
Which wheel size for my Cupra?
The one for your model, your generation and your version. The size is shown on the sidewall of your tyres (reading a tyre (page in French)); the original fitments, with their width, their offset and the tyre that suits them, are on your generation's page when it exists on the site.
Do forged wheels for a Cupra have an approval of their own, and do they pass the roadworthiness test?
No: made one set at a time, Onyx wheels have no individual approval of their own, and we say so before the order. They are designed to JWL/VIA standards. The French roadworthiness test (contrôle technique) examines the wheel without removing it (cracks, deformation, a wheel that sticks out beyond the bodywork) and checks that the tyre size is provided for by the manufacturer or accepted as equivalent; it neither validates nor rejects a modification, which is a matter for vehicle approval (réception) and the registration document. The details, country by country, are on the roadworthiness test and registration page.
And if my Cupra is not on the list?
An Onyx wheel is designed around the measurements of the car it goes on. Enter your model and its model year in the configurator: we record your car's measurements and submit them to you before machining.
Tools and guides for choosing Cupra wheels
- Tyre size equivalence: compare two tyre sizes.
- Wheel offset calculator: compare the position of two wheels.
- Wheel and tyre sizes: how to read every marking
- Wheel PCD and centre bore: reading and measuring them
- Wheel nuts: types, tightening torque, locking wheel nuts (page in French)
- Track day: preparing wheels, tyres and brakes (page in French)
- A second set of wheels for winter (page in French)
Configure your custom Cupra wheels
Enter your Cupra and its model year: we record its measurements and submit them to you before machining, with a 3D render on request. Configure your custom wheels.
Our Cupra wheels by model
PCD, centre bore, thread, diameters and original offsets: the Cupra cars we cover
One row per generation. Each value is taken from the car's page, which cites the source of each measurement, its fitments version by version and their original offsets (manufacturer). When a PCD has its own page, it leads there: that page lists every car that shares it.
| Car | PCD, centre bore, thread | Original diameters | Original offsets (manufacturer) | Onyx entry price, set of four wheels | Sources for these measurements |
|---|---|---|---|---|---|
| Cupra Formentor KM (2020-present) | 5x112 · 57.1 mm · M14 x 1.5 | 17, 18, 19, 20 inches | ET 40 | €3,200 (18″) Great Britain: £3,336 with UK import VAT | 14 sources, including 10 primary |
| Cupra Leon KL (2020-present) | 5x112 · 57.1 mm · M14 x 1.5 | 17, 18, 19 inches | ET 46 to ET 49 | €3,200 (18″) Great Britain: £3,336 with UK import VAT | 13 sources, including 9 primary |
| Cupra Born first generation (2021-present) | 5x112 · 57.1 mm · M14 x 1.5 | 18, 19, 20 inches | ET 44 to ET 50 | €3,200 (18″) Great Britain: £3,336 with UK import VAT | 12 sources, including 9 primary |
Generation by generation
Cupra Formentor KM (2020-present): 7 original fitments recorded, 17 to 20 inches. Versions: Formentor VZ5, 2.5 TFSI, 287 kW (390 PS), all-wheel drive; Formentor 2.0 TSI, 228 kW (310 PS), all-wheel drive, or 180 kW (245 PS), front-wheel drive; e-Hybrid; Formentor 2.0 TSI, 140 kW (190 PS), and 1.5 TSI, 110 kW (150 PS). Fitments: 17-inch, 7.5J ET 40 (tyres 225/55 R17; winter fitment); 18-inch, 8J ET 40 (tyres 245/45 R18); 19-inch, 8J ET 40 (tyres 245/40 R19); 20-inch, 8.5J ET 40 (tyres 255/35 R20).
Cupra Leon KL (2020-present): 6 original fitments recorded, 17 to 19 inches. Versions: Leon 5-door and Sportstourer, 2.0 TSI from 180 to 228 kW (245 to 310 PS); e-Hybrid; Leon 5-door and Sportstourer, 2.0 TSI, 140 kW (190 PS). Fitments: 17-inch, 7.5J ET 46 (tyres 225/45 R17); 18-inch, 7.5J ET 46 (tyres 225/40 R18); 19-inch, 8J ET 49 (tyres 225/35 R19 or 235/35 R19).
Cupra Born first generation (2021-present): 7 original fitments recorded, 18 to 20 inches. Versions: Born 110 kW and 150 kW (45 and 58 kWh batteries); Born e-Boost 170 kW (58 and 77 kWh batteries). Fitments: 18-inch, 7.5J ET 50 (tyres 215/55 R18); 19-inch, 7.5J ET 50 (tyres 215/50 R19); 20-inch, 7.5J ET 44 (tyres 215/45 R20) or 8J ET 50 (tyres 235/40 R20).
The same wheels from one car to the next?
Same fixing measurements on all 3 cars: PCD 5x112, centre bore 57.1 mm and thread M14 x 1.5.
The original diameters change: 17, 18, 19, 20 inches for the Cupra Formentor KM; 17, 18, 19 inches for the Cupra Leon KL; 18, 19, 20 inches for the Cupra Born first generation.
The range of original offsets changes: ET 40 for the Cupra Formentor KM; ET 46 to ET 49 for the Cupra Leon KL; ET 44 to ET 50 for the Cupra Born first generation.
Each generation's page gives the fitment of each version, with its sources.
“—”: measurement not published for lack of a sufficient source. The diameters and offsets are those of the original fitments, all versions together: the car's page gives the fitment of each version. These measurements help you recognise your car; they are not a recommendation, and Onyx does not advise any specific offset.
Onyx entry price: the set of four monoblock forged wheels in the smallest diameter of our price list that covers the smallest original diameter recorded; the other diameters and the two-piece construction are on each generation's page. Amounts in pounds: our checkout on 4 October 2026, before the carrier's clearance fee and any import duty. The amount shown at checkout is the one charged for your order.
Publication rule: a measurement is shown only if a primary source gives it (a manufacturer's document, an official vehicle type record, an original parts catalogue, the maker of the original wheel) without another primary source contradicting it, or if two independent specialist sources agree without a primary source contradicting them. The press and forums do not count. Measurements checked on 21 October 2026.
Configure custom wheels for your Cupra: free 3D render, on request.