hi guys just a bit of info for the new is 220/250 drivers.i was driving home from work last week with both front windows down due to the warm weather,when i turned onto my drive at low speed using the brakes and noticed a clicking noise coming from the front wheels.i took the car to lexus chester and the techi said the front calipers where faulty and replaced them on the warranty.( you can only hear the clicking noise when the windows are down and the radio is off)i hope this info helps a few people

On the is200 it was normaly the brake pads moving in the caliper...nothing major...maybe the new is250 has the same problem

All Lexus models have the same problem, pads moving in carrier and caliper carrier moving slightly on hub.
grease pads and caliper mounts and noise will disappear. if not phased by it dont worry cos it is common noise and not a worry.

hmmm, you sure?? If the carrier to hub bolts are done up properly, there is no way they would move.

However, the calliper slide pins moving in the carrier slightly I can see happening very easily, especially if the plastic inserts are worn out or missing.