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Buyer resource

Rotiform Wheel Buying Guide

Prepare a fitment and purchasing brief for an independent sourcing desk.

Browse Product Lines

Use the catalog to identify a family of wheel designs. Record the diameter, width and construction you want compared.

Open Catalog

Submit a Sourcing Brief

Bring a drawing, part reference or a list of known specifications. Mark open requirements before requesting an offer.

Build a brief in four steps

  1. 01

    Identify the application

    Name the model year, trim, axle, brake package and destination market. Note any suspension change that affects clearance.

  2. 02

    Write the fitment line

    Example only: 18 × 8J, 5×112, ET35, 66.6 mm center bore. Add seat type, required load in kg, brake envelope and finish before treating the example as a quote input.

  3. 03

    Set the bid basis

    Use the same quantities, currency, packaging and named Incoterm place. Distinguish per-wheel pricing from per-set pricing and list tooling separately.

  4. 04

    Plan a sample decision

    Log the sample ID and drawing revision. Ask the inspector to record radial and lateral runout at agreed measurement points and attach the setup and readings.

Questions to settle before an RFQ

At the same size, offset and load rating, compare mass in kg, spoke and brake envelope, sample and tooling fees, MOQ and report coverage. A cast catalog design can suit a standard fitment at a volume price. A forged custom design can suit a specified profile, subject to sample validation. Compare the offered wheel assemblies rather than predicting strength from construction alone.

An existing catalog SKU may work if the exact size, load and finish already match. A custom brief can resolve a specific offset, finish or packaging requirement, with drawing, sample and release milestones. Ask both routes for the supplier-specific MOQ, lead-time trigger and how changes affect the quote.

Identify the supplier entity, market, SKU and revision on each file. A supplier quality management certificate describes its scope and site. Ask for a separate SKU-linked record if the buyer requires product test or approval evidence. Match the report identifier, sample configuration and test conditions to the quoted wheel.

Holding rim width constant, ET45 places the wheel 10 mm farther inboard than ET35. Check both inner clearance and the spoke-to-caliper envelope. If width changes too, compare the inner and outer edges from the wheel drawing and verify the intended assembly on a sample.