I had the slight vibration whilst braking from high speed last summer .
no problem at normal speeds .
no leaking from bushes just beginning to look a wee bit perished and vibration a slightly worse than previously at high speed only .
have driven 6000 miles since first vibration and would like to wait a bit longer so as to do additional work on car .
how long can the thrust arm bushes last once this issue begins , bear in mind the mileage already covered and vibration only way over 80 mph . not likely to be doing higher speeds but I just test out the car sometimes to identify potential issues .