Onyx Forged
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OX-H5 Tramontane — monoblock forged wheels for Audi, BMW, Porsche…

In short: OX-H5 Tramontane: monoblock forged wheels, 18″ to 24″, priced per set of four wheels from €3,200.

The OX-H5 Tramontane is a monoblock forged wheel with five blades. Each blade leaves the hub, widens and twists as it runs to the rim, like the blades of a propeller: five solid surfaces, five large openings, a design that seems to turn even at a standstill. The wide blades give the face a clean-cut, sporty look, and their twist catches the light from edge to edge. At the centre, the cap carries the OX monogram. In anthracite grey or satin black, the design reads as one block; in satin bronze, the light slides along each blade; in brushed silver, every edge stands out.

OX-H5 Tramontane forged wheel, anthracite grey

Offered from 18″ to 24″. It suits compact sports cars, saloons and fast estates.

How to order

Choose the diameter and the finish, then give your car's make, model and year: that is all we need to take your order. The Onyx Forged design office works out the measurements and submits them to you before machining.

Price by diameter

Every price is for a set of four wheels; delivery is free to 35 European countries.

OX-H5 Tramontane: price of a set of four wheels by diameter
DiameterSet of four wheels
18″€3,200
19″€3,200
20″€3,300
21″€3,550
22″€3,750
23″€3,950
24″€4,100

Finishes

The finishes in the catalogue for this model, all at the same price for a given diameter:

  • Anthracite grey
  • Satin black
  • Satin bronze
  • Brushed silver

Another colour, from our palette or from a RAL or other reference, can be made for the whole wheel: the price shown does not change, whatever the colour. Write to customer service.

Cast or forged: what a wheel weighs

SizeClassic castForged monoblock
17″9–11 kg6.5–8 kg
18″10–12 kg7.5–9 kg
19″11–14 kg8.5–10.5 kg
20″13–16 kg9.5–12 kg
21–22″15–19 kg11–14 kg
23–24″18–22 kg13–16.5 kg

Indicative values, for one wheel. The exact weight depends on the design, the width and the offset.

Engineering and specifications

  • Material: forged 6061-T6 aluminium; forging closes up the porosity that a cast wheel can retain.
  • Construction: monoblock, 5-axis CNC machined from a single piece. The same design can be studied as a two-piece or three-piece wheel, on quotation from customer service.
  • Measurements: PCD (bolt pattern), offset (ET) and centre bore machined for your car, to the measurements the Onyx Forged design office submits to you before machining; no spacers or spigot rings to add.
  • Standards: wheels designed to JWL/VIA standards.
  • Packaging: set of four wheels.

Have a sketch or an idea for a design? Customer service replies with a quotation, and the Onyx Forged design office draws your wheel to your car's measurements.

Delivery, payment and warranty

Delivered in 4 to 8 working weeks, transit time included, from full payment, 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. Payment when you order on the website. At checkout, you pay by card or by bank transfer; Klarna is also offered, depending on your country and subject to acceptance. Card limit too low? Choose bank transfer at checkout. Free delivery to mainland France (including Corsica), Monaco, the whole European Union, Switzerland, the United Kingdom, Norway, Iceland, Andorra, San Marino and Liechtenstein, and to the French overseas departments and territories on quotation, which sets the delivery time. For a delivery subject to customs (overseas departments and territories, Switzerland, Great Britain…), import duties, taxes and customs clearance fees are paid by the recipient. Terms and Conditions.

5-year Onyx Forged commercial warranty from the date of delivery, covering manufacturing and material defects and structural failures not caused by abnormal use. This warranty is in addition to your statutory rights.

Their reviews of this model.

10 reviews collected earlier from customers of this model, reproduced here, newest first.

Average rating: 4.8 out of 5 · 10 reviews

  • 5 stars: 8
  • 4 stars: 2

  • Montées hier sur mon Alpine A110, et la voiture a changé de caractère. Finition noir satiné nickel, aucune bague à ajouter, exactement comme annoncé.

    Rating: 5 out of 5

    Lucie G.

  • Jantes irréprochables, cotes exactes, usinage très propre. L'étoile en moins est pour le transporteur, qui a livré neuf jours après la date annoncée sans jamais mettre le suivi à jour.

    Rating: 4 out of 5

    Erwan Le G.

  • Le bureau d'études m'a envoyé les cotes à valider, puis un rendu 3D de la Tramontane sur ma 911, et c'est exactement ce que j'ai reçu. Bronze satiné régulier sur les quatre jantes, délai tenu. merci à l'équipe pour les réponses rapides par mail.

    Rating: 5 out of 5

    Marc V.

  • Shipped to Ireland, tracked and insured as stated on the site. Machining is clean, the satin black finish is even across all four, and the fitment on my Cayman was confirmed in writing before production. Great experience.

    Rating: 5 out of 5

    Fiona W.

  • tramontane gris anthracite sur ma gr yaris, c est propre et leger. montage sans souci, equilibrage quasi nul. je recommande

    Rating: 5 out of 5

    Sacha M.

  • Un travail d'une grande précision, parfaitement conforme à la configuration validée avec le bureau d'études. Le délai annoncé a été respecté et l'emballage était soigné, chaque jante dans sa housse.

    Rating: 5 out of 5

    Nathalie B.

  • Tramontane sur ma M2 🔥 Le dessin accroche la lumière de partout. Finition parfaite.

    Rating: 5 out of 5

    Dylan C.

  • Les jantes son superbes, rien à redire sur le produit. Par contre un carton est arrivé enfoncé et le livreur a était impossible à joindre. La jante n'a rien, ouf.

    Rating: 4 out of 5

    Aurélie T.

  • Deuxième commande chez Onyx. Même sérieux dans la validation des cotes, même qualité de finition. La Tramontane en noir satiné sur une Cayman GTS, c'est sobre et efficace.

    Rating: 5 out of 5

    Benjamin R.

  • Légère. Nette. Bien finie. Cotes justes. Délai tenu. Rien à redire.

    Rating: 5 out of 5

    Louis P.

All reviews received are published, with no filtering by rating. How we check reviews

Questions about the OX-H5 Tramontane

Will the OX-H5 Tramontane fit my car?

It is machined to your car's measurements. Give your car's make, model and year when you order: the Onyx Forged design office works out the PCD (bolt pattern), the offset (ET) and the centre bore, and submits them to you before machining. No spacers or spigot rings are needed. Our guides: PCD, bolt pattern and centre bore and brake caliper clearance.

What tyre size goes with a bigger wheel?

Our tyre size calculator compares your original tyre with a size for the new rim diameter: overall diameter, sidewall height and speedometer error, against the ETRTO tolerance. Your vehicle handbook, the tyre placard and your insurer have the final say. Our guide: How to read a tyre size (and the load and speed index).

Does the finish change the price of the OX-H5 Tramontane?

No. Every finish listed on this page costs the same for a given diameter, and another colour, from our palette or from a RAL or other reference, does not change the price shown either.

The other models

All the models in the catalogue · The monoblock construction

The same model, make by make

Each set is machined for a specific vehicle: the pages below bring together the models and generations already covered, make by make.

Guides and tools

Read before you choose, or check a fitment yourself:

All our guides · All tools