Tier supply: winning a nomination and living inside someone else's schedule

Nomination is the transaction that matters

Business is won at nomination, when the customer names a supplier for a part on a specific programme. Everything commercial settles there: piece price, tooling contribution, capacity commitment, engineering responsibility and the approval timetable. Once nominated, a supplier is effectively locked in for the model's life, because requalifying a source mid-programme is painful for the buyer too. The asymmetry cuts both ways. The supplier gains volume visibility few other sectors offer, and surrenders the ability to reprice when input costs move. Quoting discipline therefore matters more than selling skill, since a badly costed nomination cannot be recovered by working harder afterwards.

Part approval decides when cash starts arriving

Before series shipment is permitted, a supplier must demonstrate that the production process, on production tooling, at production rate, makes conforming parts and can keep making them. The evidence package covers dimensional results, material certification, process capability studies, measurement system analysis and a witnessed rate run. Assembling it absorbs engineering effort that generates no revenue, and a rejected submission pushes the whole launch. Automotive quality management under IATF 16949 formalises the surrounding discipline. Entrants routinely budget for machines and people, then discover that metrology capability and documentation are where the schedule really goes.

Releases, not purchase orders, drive the shop floor

Daily demand arrives electronically as a rolling schedule: firm quantities across a short horizon, planning figures beyond it. The firm window is narrow, the planning window advisory, and the supplier absorbs the difference. Capacity must therefore be sized against the upper planning figure while cash is earned against the firm one. Sequenced parts go further, arriving in build order with no buffer whatsoever. Predictable consequences follow - finished goods parked near the customer, premium freight held in reserve, and a scheduling team whose real skill is judging how much of the planning horizon to believe.

Contractual price reduction against real cost inflation

Most supply agreements assume unit price falls across the programme, on the theory that the supplier learns. Learning is genuine but finite, and it rarely tracks the agreed curve once the early gains are taken. Energy, labour and material costs meanwhile move independently. Firms that survive treat productivity as a contractual obligation rather than an improvement ambition: scrap, cycle time, tool life and automation are planned directly against the price schedule instead of a generic target. Suppliers who skip that discipline find the margin has quietly gone, usually when volumes are highest and management attention sits elsewhere.

Tooling ownership and the long service tail

Tooling is usually funded by the customer and remains the customer's property, held at the supplier's site under a bailment arrangement. Consequences follow: the supplier maintains an asset it does not own, and the customer may remove it, which limits the supplier's bargaining position in any dispute. At the far end, service obligations continue after series output stops, often for a long stretch, requiring tooling, know-how and sometimes a dedicated cell to stay alive for tiny volumes. Pricing that tail honestly at nomination is one of the clearest markers separating an experienced automotive supplier from a hopeful one.

Frequently asked questions

Who owns the tooling in an automotive supply agreement?

Customer-funded tooling normally belongs to the vehicle manufacturer even though it stands on the supplier's floor and is maintained by the supplier. The contract sets out maintenance duties, insurance and the customer's right of removal. Suppliers should track tool condition and refurbishment history carefully, because arguments about wear surface exactly when a relationship is already strained. Where the supplier funds tooling itself, amortisation has to be recovered in the piece price, which shifts the risk if programme volumes fall short.

What happens if a run-at-rate demonstration fails?

The customer withholds approval for series shipment and the launch plan moves. Depending on cause, the supplier may have to repeat the demonstration, submit a corrective action package, or ship under a controlled deviation with sorting in place at its own expense. Repeated failures put the nomination itself at risk and can trigger a new-business hold, meaning no further awards until performance recovers. Commercial damage of that kind usually exceeds the direct cost of the rework several times over.

Why do tier suppliers end up holding obsolete stock?

Because they buy against a planning horizon and get paid against a much shorter firm one. When a customer drops a variant, brings forward a design change or ends a model early, material already committed upstream has nowhere useful to go. Contracts often allow obsolescence claims, but recovery is slow, partial and dependent on documentation showing the ordering decision was reasonable at the time. Disciplined suppliers keep an auditable trail linking every purchase commitment back to a released schedule.