wheel trim       
noun [ C ] uk/ˈwiːl ˌtrɪm/ us/ˈwiːl ˌtrɪm/
 轮毂饰板,轮毂盖
a circular covering over the middle part of a vehicle's wheel
  The car is in perfect condition, except for a few scuffs on the steel wheel trims. 除了钢制轮毂饰板上有一些刮痕外,这辆车车况非常好。 
 Synonym: hubcap
 - More examples
 - Many people want matt plastic wheel trims instead of shiny hub caps.
 - Radios and wheel trims were also stolen from cars.
 - For the past 12 months I have been driving around without wheel trims.
 - The scuffed wheel trim can easily be replaced.