Case Study: Wheel Spacer Supply for an e-commerce seller in Europe
Source:Case /
Time:2026-09-18
Wheel Spacer for An e-commerce seller in Europe
An e-commerce seller came to us with a wheel spacer programme for Europe. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.
The starting point
- A supplier who changed material without saying so
- Lead time that slipped twice before bulk started
- Premature wear on the first batch

What was specified
| Part | Wheel Spacer |
|---|---|
| Client | An e-commerce seller |
| Market | Europe |
| Volume | 2,000 pieces across 4 specifications |
| Base material | Natural Rubber |
| Sampling rounds | 4 |
| Delivery window | 8 weeks from PO to ex-factory |
| Compliance | ECE R90 |
How it was resolved
- The specification was rebuilt around Natural Rubber and the tolerance locked before bulk.
- A pre-production sample was approved and kept as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.
- Documentation shipped with the goods instead of after them.

Result
- 2,000 pieces delivered inside the 8-week window.
- Unit cost held within 4.5% of the original quotation.
- Inspection-related rejection stayed under 0.5%.
- The specification is on file, so reorders reproduce the approved sample.
What we would repeat
Approve a pre-production sample made from the actual bulk material. Substitute material behaves differently in service.
Planning something similar?
Send the specification you are working to and we will confirm what we can match, what we would change and why.



