Supplier records
Request the legal entity, site and part revision on the quotation. If ISO or IATF documentation is supplied, match the certificate to the named site and scope as management-system evidence.
China Procurement Desk
Hofmann Power Weight Fitment & Specs
Use the same drawing revision, dimensions and market requirements for every supplier quote. Record any missing measurement as an open field for review.
Send Your SpecPrepare your RFQ
- 01 Vehicle, wheel and drawing revision
- 02 Size, load and mating interface
- 03 Quantity, target market and port
Specification register
Send the measurable fields
| Part family | RFQ fields | Sample or document check |
|---|---|---|
| Hub centric rings | Wheel-side OD and hub-side ID in mm, axial depth, chamfer, material and quantity by size. Example format: 66.6 mm OD × 57.1 mm ID. | Compare measured OD and ID to the drawing tolerances using suitable calibrated gauges. Confirm full seating on both mating parts before approving the application. |
| Clip-on weights | Rim flange section or profile code, weight increments in grams, clip material, wheel finish, pack and destination market. | Compare mass on a suitable scale and check clip engagement in the agreed wheel fixture. Confirm separate profiles for variants that differ at the flange. |
| Adhesive weights | Mass per segment, strip dimensions including backing, rim finish, application conditions and target market material rules. | Measure clearance against a representative wheel. If an adhesion check is requested, record surface preparation, temperature, dwell time, method and limits in the test plan. |
| Fasteners and valves | Specify thread pitch, seat form, engaged length and finish for fasteners. For valves, provide the valve hole size, pressure requirement and application. | Confirm candidate drawing, mating seat or valve interface and the document scope for the exact SKU. |
For a complete wheel or tire inquiry, add rim diameter and width, PCD, offset and center bore, or the tire size, load index, speed rating, tread and duty cycle. A wheel’s radial runout needs a defined reference surface and setup before comparing readings. A stock ring can share the required diameters and still differ at the chamfer. Compare the stock drawing against a custom drawing on axial depth, material, tolerance and sample cost before selecting a route.
Verification scope
Evidence before commitment
Sample check
Record part revision, date, measuring setup and operator on the sample record. Route changes to the buyer for acceptance and keep a reference sample if the buyer requests one.
Document scope
Request the issuer, tested model, report revision and target market. Where a rule applies, check its product scope with the qualified issuer or importer. A wheel approval has its own scope and cannot serve as evidence for a clip-on weight.