It is quite common for the splines on wire wheel equipped cars to wear. If you hear them clacking on acceleration/deceleration, than chances are you need to replace the product shown.
Pictured is a coarse threaded unit. If you have fine threaded knock off spinners, we have fine threaded hubs too. Use the drop down to select or email your choice.
8 TPI is coarse and 12 TPI is fine.