What tires are the front wheels of Lapras freight cars?

The front wheels of Lapras freight cars are made of aluminum alloy wheels. The front wheels of Lapras freight cars are made of aluminum alloy wheels, and the rear wheels are made of lightweight and high-strength steel wheels, which are both lightweight and load-bearing, equipped with lightweight traction saddles and industry-leading lightweight composite leaf springs. Scientific weight reduction is realized through five lightweight technologies: new material, new structure, new technology, topology optimization and function optimization.