Knowledge Base / Standards & Compliance
TÜV / JWL / VIA Certification Explained
Three standards get printed on wheel adverts constantly. Here is what they actually test — and what a certificate does and does not tell you.
Three standards get printed on wheel adverts constantly. Here is what they actually test — and what a certificate does and does not tell you.
A German testing regime. For wheels, the relevant part is usually a design or component test: fatigue, impact and radial load, run against a defined test plan.
A TÜV report applies to a specific wheel design and specification. It is not transferable to a different offset or width without re-testing.
Japanese standards. JWL covers passenger-car light alloy wheels; VIA is the associated inspection and registration scheme.
Both are test standards, not a guarantee of fitment on your car.
It does not prove the wheel fits your brakes, your arches or your load requirement. That is a fitment calculation, done per vehicle.
It also does not prove the wheel in the box matches the tested drawing. That is what the dimensional report is for.
We share material certificates and dimensional reports for a specific set on request.
Where a partner facility holds a certificate, we provide the document rather than a logo. If we cannot produce it, we do not display it.