LFI uses selected TÜV SÜD reference reports, JWL Aug. 2014 passenger-car wheel test conditions, and internal production validation to support custom forged wheel engineering. Reference specifications are tested independently, while derivative custom builds are controlled inside the same material, machining and validation framework.
Reference reportCSF1 19x9 ET29 5x112, 690 kg load rating.
JWL basisBending fatigue, radial fatigue and 13-degree impact.
Internal validationDerivative specs are checked inside the same engineering framework.
Higher loadsSelected hybrid and EV applications may be validated up to 1,050 kg.
Compliance position
Reference reportnot loose badge claim
Custom forged wheels can be produced in many diameters, widths, offsets, bolt patterns, center bores and load ratings. Submitting every width, offset and bolt-pattern variant for separate third-party testing is rarely practical. Instead, LFI validates a reference specification independently and controls derivative builds within the same engineering framework.
TÜV SÜD reference testing
Selected high-volume specifications are independently documented through TÜV SÜD lab reporting.
Controlled design families
Derivative specifications are produced under the same material, engineering, machining and quality-control framework.
Internal validation
Production wheels are validated against JWL conformity targets, with stricter internal thresholds where vehicle demands require it.
Reference example
CSF1 19x9JWL report basis
JWL test basis: CSF1 19x9 ET29 was tested to JWL Aug. 2014 conditions at 690 kg.
TUV SUD report route: The reference report is tied to a named lab, named wheel, and stated load, not a loose badge claim.
Report field
Reference detail
Why it matters
Wheel model
Aluminum alloy wheel model CSF1 for La Forge Ind Pte Ltd.
The report identifies a named wheel and brand entity.
Specification
19 x 9, ET29, 5x112 PCD, 66.45 mm bolt hole diameter.
The reference claim is tied to an actual tested size and fitment.
Load rating
690 kg wheel load rating.
The test conditions are connected to a declared wheel load.
Test route
TÜV SÜD Certification and Testing (China) Co., Ltd.; CAAM Wheel Inspection Center Co., Ltd. (CWIC).
The report identifies the testing route instead of relying on a generic logo.
Dimensional basis
Rim dimensions and tolerances based on E.T.R.T.O. and ISO standards before strength tests.
Dimensional review comes before fatigue and impact validation.
Applicable test standard
JWL Aug. 2014test conditions
The reference wheel was tested against JWL: Aug. 2014 Test Conditions for Light Alloy Road Wheels for Passenger Car.
Rotational bending fatigue
Evaluates resistance to repeated bending stress generated by cornering forces.
Rolling / radial fatigue
Evaluates wheel durability under repeated rolling load on a radial fatigue rig.
13-degree impact
Evaluates resistance to sudden localized impact under defined test conditions.
Recorded conditions
What the reportactually records
Test
Recorded conditions
Reported outcome
Rotational bending fatigue
690 kg permissible wheel load; 0.7 friction coefficient; 0.326 m static tyre radius; 29 mm inset; 3,186 N·m bending moment; 500 r/min; 100,000 revolutions; 140 N·m nut torque.
No cracks found and no impermissible drop in fixing-part tightening torque after the required revolutions.
Rolling / radial fatigue
18,581 N test load; 245/45R19 tyre; 460 kPa inflation pressure; 500,000 revolutions; 140 N·m nut torque; 1.7 m drum diameter.
No cracks found and no impermissible drop in fixing-part tightening torque after 500,000 revolutions.
13-degree impact
230 mm dropping height; 245/45R19 tyre; 200 kPa inflation pressure; 594 kg load; impact location at window and spoke.
No air leakage and no penetrate cracks found after impact was applied.
Internal validation equipment supports derivative custom specifications where full third-party re-certification of every variant is commercially impractical.
Internal validation
Beyond baselinewhere required
Baseline passenger-car wheel standards were developed around an earlier generation of vehicles. Higher mass and higher torque in modern hybrid and battery-electric applications can justify stricter internal validation. LFI commonly validates selected demanding applications at load levels up to 1,050 kg, approximately 52% higher than the 690 kg reference wheel load in the CSF1 report.
What internal validation covers
Internal validation is an engineering and quality-control measure. It is not a claim that every derivative custom specification has a separate third-party certificate. Its role is to keep production wheels inside a controlled validation process suited to each application.
Define the vehicle.Mass, tire, brake package, intended use and fitment envelope are reviewed.
Set the target.Load and clearance targets are chosen around the application, not copied blindly.
Validate the design.Reference reports, FEA logic and physical testing inform the engineering decision.
Control production.Material, machining, finish and QC are kept inside the approved build route.
Downloadable proof
Reports customerscan inspect
CSF1 19in TÜV SÜD report
Reference report for the CSF1 19x9 JWL-tested wheel specification.
Testing reports are part of a broader engineering picture. For alloy composition and pricing questions, read our 6061 vs 6063 forged wheel alloy guide.
Testing FAQ
Commonquestions
Are all LFI wheel specifications individually TÜV SÜD certified?
Selected high-volume reference specifications are independently documented through TÜV SÜD lab reporting. Other custom specifications in the same design family are built under the same material, engineering, manufacturing and validation framework.
Which LFI wheel specification has a TÜV SÜD reference report?
The current reference example is a CSF1 aluminum alloy wheel for La Forge Ind Pte Ltd in 19 x 9, ET29, 5x112 PCD, with a 690 kg wheel load rating. The report was conducted by TÜV SÜD Certification and Testing (China) Co., Ltd. and CAAM Wheel Inspection Center Co., Ltd. (CWIC).
Which test standard is referenced on this page?
The reference wheel was tested against JWL: Aug. 2014 Test Conditions for Light Alloy Road Wheels for Passenger Car.
What tests are included in the reference report?
The report covers rotational bending fatigue, rolling or radial fatigue, and 13-degree impact testing. These cover repeated cornering load, repeated rolling load, and sudden impact load under defined conditions.
What does internal validation mean?
Internal validation means LFI uses controlled engineering and quality checks to evaluate production wheels and derivative custom specifications. It supports production control for custom sizes where separate third-party testing for every width, offset and bolt-pattern variant is not practical.
Why does LFI test some applications above baseline JWL conditions?
Modern hybrid and battery-electric vehicles can be heavier and can produce higher torque than older passenger-car baselines. Where the build requires it, LFI may use stricter internal load targets, including load levels up to 1,050 kg.
Can customers download the testing reports?
Yes. This page links to the CSF1 19-inch TÜV SÜD report and an alternative detailed bilingual CWIC report so customers can review the reference documentation.
Need build validation?
Ask beforeproduction
Send the vehicle model, brake package, tire target, intended use and load requirements. LFI will confirm the appropriate engineering route before the wheel is machined.
