RX300 Front Brake Discs Worn Out after 20K Miles?

[RobinGBrown]

I had my front brake discs replaced 2 years and 20,000 miles ago and at this year's service they're apparently down to 26.8mm and need replacing soon.

Is it likely that the brake discs will wear out so soon? Surely I should get a lot more mileage out of them?

Any thoughts?

[PCM]

In my ignorance, do you mean the discs or the pads?

[RobinGBrown]

Discs, definitely discs.

[steve2006]

How long are your pads lasting?

20,000 miles sounds low but this can depend on your driving style and type of driving, constant stop start driving in town will cause faster wear than country driving.

Is the car garaged as if left outside every time the discs get wet they will rust removing another layer of metal when next used.

Is there a visible wear lip on the outer edges of the discs to confirm the claimed wear or is this just a figure from a Lexus dealer regarding the thickness.

As a comparison my LS400 discs are all originals after nearly 90,000 miles and 22 years.

[RobinGBrown]

I think the pads have been replaced once in the same time frame, there were new pads when I had the new discs, and the current ones are apparently at 50%. So one and a half sets of pads in 20k.

[steve2006]

Check for the wear lip as previously mentioned then get a second opinion from an independant garage.

 

[ColinBarber]

Also get the brakes checked to make sure the sliding pins are moving freely. You will get excessive wear if they don't release correctly.