海报1
The reasons to replace the shocks

1. MAINTENANCE
 
On well paved roads, the shocks can move up or down 1,500 to 1,900 times every mile. In 50,000 miles that can exceed 75 million cycles. Over time, performance tends to decrease gradually and the motorist usually doesn't realize how much handling and control is lost. Replacing shocks and struts after 50,000 miles (80,000 km) can keep the vehicle performing as well as it was designed and extend its life expectancy. 
 
2. DOESN'T PERFORM WITHIN VEHICLE DESIGN 
 
Worn shocks and struts eventually causes ride control conditions to worsen to a degree that impairs the drivers ability to control the vehicle. Road testing and vehicle inspections by a qualified technician every 12,000 miles(2000 km) is recommended to identify and keep the motorist informed about these conditions. 
  
3. REPLACE FAILED SHOCKS
 
Shock or strut failures are a driving safety hazard. If you can't control your vehicle, then it controls you. Evidence of failures includes things like excessive bounce, units leaking to the point of fluid dripping, tires that are cupping and component damage that can be seen during inspection.