Hi guys, i got a lexus LS400 and had the same problem as you all did, found the OEM ones you mentioned maneesh, but i love tacking my lexus round the track and found polyurethane bushes for various lexus's on ebay. Got the rear trailing arm hub bush for around £45 with stainless inserts!! bargain.. Made a big difference on cornering, found that front bush on rear arm is under development. Cant waite.. Front upper inner arm bushes - Around £85 will be my next purchase as dont want WHOLE arm and ball joint and bushes in one item only say lexus.. , Hope this is some use to someone.