Front brake disc longevity?

[HiQPen]

I am getting ready to change my brake pads, and will take my disc to local parts store to be turned and checked, but I was wondering how many miles people have been getting out of their disc before they need to be changed?

 

[micruz60]

There has been a change in the technology of brake pads. With the advent of 'lifetime' brake pads, the rotor is sacrificed... Soo when you service the brakes, keep this in mind.
If the rotors are smooth, and runout is within specs, keep using them, replace the pads with a 'non-lifetime' type.
One should get around 20,000 to 30,000 miles per set of pads... Dependent, of course, on how much braking, duration and heat factor into the wear.

 

[hj 60]

Mine are overdue, if the disk is out of spec the pads must be new or with worn pads the pistons will come out to far.

page BR-41 brakedisk 20 mm new and 19 mm replace

Because taking them out is awful (preload, smashing and while your there fun) I wish I had replaced them while I was there

I am starting to hate boxed parts, they need to be on the vehicle, soon...

And what a joy it will be disconnecting the disk rotor from the hub, I think I will learn a lot of new words I will first move to another house and get the press installed in the garage.

The disk has become very nice and the scoring is gone with new pads:
I believe the new generation pads leave a tiny layer of carbon diamond oxide so soon the disk will be repaired to specs

 

[3_puppies]

hj60, can you get steel brakeline? copper makes me nervous.
Paul

 

[micruz60]

@hj 60 see above

 

[rustybucket]

I used some hypermiling techniques where brake use is minimal. Mine will last perhaps 25-50% longer then the typical owners cruiser.

 

[hj 60]

Thanks for mentioning the copper, it is not allowed in Germany but it is allowed for old cars (no ABS) (and I live in the Netherlands)

For cars with ABS the pulsing pump could be hard for the line.
Kunifer is a good alternative and better resistant against vibration but copper for an oldtimer is fine, the HJ has no huge line pressure.
If anything splits because of high pressure I think it will be the soft lines.

 

[Output Shaft]

... I was wondering how many miles people have been getting out of their disc before they need to be changed

276,693.2 miles
(29 years)

 

[roadstr6]

203K or 32 years in my case.

 

[HiQPen]

Thanks to those who replied with milage. I will check mine, but sounds like they should have plenty of life left.

 

[augirthedude]

I replace when needed.. I change the brake pads when I replace the tires . Rotors turned every pad change. New rotors last time at 250,000. I even have the new rotors turned when I get them to assure concentricity before installing them on the truck .

 

[Landpimp]

new OEM brake tubes(backing plate to caliper) are less than $5 each. not sure if steel or copper

hj60, can you get steel brakeline? copper makes me nervous.
Paul