How to Order Custom Forged Wheels: PCD, Offset, Center Bore and Brake Clearance Guide

Start with the Vehicle and the Use Case

Every serious custom forged wheels project starts with the vehicle and the job the wheel must do. A daily-driven sedan, a track car, an overland 4x4 and a show build place very different loads on a wheel, so the target use case drives the engineering choices that follow: load rating, barrel depth, spoke layout and finish.

As a forged wheels manufacturer working with OEM and distribution partners, we recommend sharing the exact vehicle platform, curb weight, intended use (street, track, off-road or show) and target market at the very first inquiry. This lets our engineering team propose a workable specification instead of guessing. Where a detail depends on the application, it is subject to project confirmation.

Diameter and Width: the Foundation of Fitment

Diameter and width define the tire envelope and the visual stance. Forged construction allows a wide size range in 1-inch increments, and widths are tuned in half-inch steps to match the chosen tire. For staggered setups, front and rear sizes are engineered as a matched pair so the rolling diameter stays correct.

• Diameter: chosen around the vehicle platform and brake package; common project ranges run from 17 to 24 inch, with other sizes subject to project confirmation.
• Width: matched to tire section width and fender clearance; concave designs may limit maximum width.
• Tire clearance: allow margin for sidewall stretch, camber and suspension travel.

PCD (Bolt Pattern): Get the Bolt Circle Right

The PCD, or bolt pattern, is the diameter of the circle running through the wheel bolts, for example 5x112 or 5x120. It must match the hub exactly; there is no safe compromise on this number. Dual-drill patterns are possible on some forged designs, but they change pad geometry and must be reviewed case by case.

When you order OEM forged wheels for a range of vehicles, list every PCD in your program so the hub and spoke tooling can be planned together. Custom wheel PCD and offset combinations outside common standards are subject to project confirmation.

Offset / ET: Controlling Stance and Clearance

Offset (ET) is the distance between the wheel mounting face and the centerline of the rim. It decides how far the wheel sits in or out of the fender, and it directly affects suspension geometry, bearing load and inner clearance.

Because forged wheels are machined to order, ET is a free variable: we build the exact offset your fitment sheet requires, including aggressive negative offsets for wide-body builds. The usable offset range interacts with spoke design and caliper clearance, so final ET is confirmed against the full specification.

Center Bore: Hub-Centric by Design

The center bore (CB) should match the hub diameter so the wheel is hub-centric, letting the hub carry the load instead of the bolts. For private label forged wheels programs covering several platforms, we can machine the bore to each target hub or supply precision center rings where one bore must serve multiple vehicles.

Provide the hub diameter in millimetres for each vehicle in your program; where original hub data is unavailable, contact us to confirm the correct measurement method.

Brake Caliper Clearance: Measure Before You Order

Large brake kits are the most common reason a beautiful wheel design fails to fit. Caliper clearance has three dimensions: radial (caliper outer radius against the inner spoke profile), axial (caliper thickness against the barrel and spoke drop) and the bolt-head zone around the hub.

The reliable method is a clearance template or 3D scan of the brake package. If you are developing OEM forged wheels around a new brake kit, share the caliper drawing or template with us and we will check the spoke and barrel geometry before tooling. Clearance results are always subject to project confirmation against the physical brake package.

Concavity and Spoke Design: Balancing Looks and Strength

Deep concave faces are the signature of premium forged wheels, but concavity is not a free choice: it competes with brake clearance, offset and load rating. A deeper face usually means a higher spoke drop, which the forging and CNC process must be designed around from the start.

Our engineering team proposes a spoke layout, pocket depth and window size that keep the design within its structural envelope for the declared use case. Visual targets such as flush lips, hidden bolts or exposed hardware on multi-piece builds are all part of this conversation.

6061-T6 Forged Aluminum: Why the Material Matters

We machine our wheels from 6061-T6 forged aluminum. Forging compresses the grain structure under thousands of tons of pressure, producing a denser, stronger blank than cast aluminum. That strength-to-weight ratio is why 6061-T6 forged aluminum wheels can be lighter and stiffer at the same time, improving unsprung mass, acceleration and handling response.

The forged blank also allows the aggressive CNC machining that deep concave and thin-spoke designs require. Material heat treatment and mechanical properties follow the project specification; test reports, where required, are subject to project confirmation.

Finish, Color and Logo Options for Private Label Programs

Finish is where a private label forged wheels program builds its identity. Brushed, polished, chrome-look, matte, gloss and two-tone combinations with tinted clear coats are all available, and color matching to a supplied code or sample is part of the OEM service.

• Face and barrel can carry different finishes, for example a brushed face with a polished lip.
• Center caps, valve stems and hardware can be color-matched to the program.
• Logo options include engraved, embossed or printed center caps and laser-etched barrel branding for OEM forged wheels orders.
• Final color approval is made against physical samples before bulk production.

Quantity, Packaging and Shipping Information

As a forged wheels manufacturer serving distributors and project buyers, we structure production around program quantities rather than fixed retail packs. Minimum order quantity, sample policy and production timing depend on size, design and finish, so contact us to confirm the figures for your project.

Wheels are packed for export with protective caps, foam or carton protection per spoke design, and cartons are palletized on request. We support EXW, FOB and CIF terms and can prepare packing lists and shipping marks to match your import workflow; destination-specific packaging rules are subject to project confirmation.

RFQ Checklist: What to Send with Your Inquiry

A complete first inquiry moves a project forward quickly. Use this checklist when requesting a quotation for custom forged wheels:

• Vehicle platform and intended use (street, track, off-road, show).
• Diameter and width per axle, including staggered setups.
• PCD, hub/center bore and target ET offset.
• Brake kit details or clearance template, plus target destination port and timing.
• Finish direction, logo requirements and estimated program quantity.

FAQ