Rim quality appraisal

If the rim quality is not up to standard, it will lead to poor safety, rapid wear during use, poor handling and grip, and easy tire blowouts when driving at high speeds, increasing driving risks and other problems. The compressive strength, tensile strength and other properties of the rim material must comply with national standards.
Zhongke Testing can carry out material product quality appraisal services, carry out appraisal work on whether there are quality problems related to wheel rims, issue professional and reliable inspection reports, and assist courts and enterprises in resolving product quality disputes.

GB/T 10824-2022 Technical specifications for solid tires on pneumatic tire rims
GB/T 10823-2009 Specifications, dimensions and loads of solid tires on pneumatic tire rims
GB 9743-2015 Car tires
HG/T 4625-2014 Tire strips
HG/T 2177-2011 Tire appearance quality
GB/T 7036.1-2009 Pneumatic tire inner tubes Part 1: Car tire inner tubes

Entrusted by the Provincial High Court, our company took over the investigation of a motor vehicle wheel rim cracking case. Less than half a year after the party purchased the motor vehicle, while driving at high speed, the vehicle body shook severely. When the vehicle was parked and inspected, it was discovered that the left front wheel rim was cracked.
The expert team conducted an overall inspection of the motor vehicle involved, and also focused on the wheel rim design inspection plan. Finally, the following conclusions were drawn:
1. After testing by national standard methods, the compressive strength and tensile strength of the rim material met the requirements;
2. No old damage was found near the fracture of the wheel rim, which is not a fatigue fracture;
3. From the stress analysis of the depression, the fracture was caused by concentrated force;
4. The fracture of the wheel rim was caused by the impact of foreign objects during driving.