Brake Disc Life Expectancy

[andyb]

Now I know it depends on how theyre used but how many miles should an average disc be good for? Looking on ebay at some SRAD ones that have done 27K and the seller says "Good, Unworn discs". Is he talking cr*p or not???

:D

[Grinch]

Well I have a set of discs at 38k, seem fine... though if they have been raced then your going to get lots more wear.

[sdusk]

A better way might be to state how many sets of pads they will last.

[northwind]

It depends entirely on the rider and the use tbh.

[NedSVS]

If you stick with genuine Suzuki pads then a disc that is still good at 38k is probably possible; my front discs look excellent at 24k miles. I've no doubt that they wouldn't look this good if I'd run any sort of after market pad. Tried EBC on the rear and was alarmed at the wear and scoring they produced. Not saying EBC are any worse, or better, than other aftermarket pads in this respect; just saying if you want your discs to last stick with genuine Suzuki pads.

[RandyO]

I am on my 3rd set of rotors in front, forst set lasted 75k, secont set got warped rather quickly, I have about 45k on the rotors that are on my bike now

my rear I am on second rotor

I have replaced my front calipers once and rear caliper twice, I go theu rear brakes quicker than front, and because I use brakes so little, my calipers seem to get gummed up afet the second set of pads, I fine that SV calipers are relatively inexpensive and it's cheaper for me to replace calipers rather than have them rebuilt

[Biker Biggles]

Replaced a set of fronts at 69000 miles,but they were well past it by then.It really does depend on riding style and how hard the pads are.It's a bit like tyres.If you thrash them they wear out in no time.

[andyb]

Cheers Guys, just got some other discs from ebay that had less miles on (GSXR OEM ones) after the guys on another thread said that the EBC ones are rubbish!

[Ceri JC]

As someone mentioned, I'd imagine "number of sets of pads" would be a better measurement than mileage. It depends on the pads that have been used too. Sintered pads are meant to wear discs a lot quicker.

[Mike1234]

Why not just ask someone to measure them?

The workshop manual lists permitted tolerances so it should be fairly easy to judge just how worn they are.

[Viney]

What i was going to say Mike! 4mm is the absolute minimum. Saying that my last set where at 3.6mm!! That was 45k through london and running Carbonne lorrine pads. The Double H's seemed to accelerate wear big time.

[r4ce_e3nd]

Mine are now at 4,1mm but have a different color in the middle and are slightly thinner in the middle also...
my bike has 60k km and 3 trackdays and has EBC pads (don't know which type).



http://i13.tinypic.com/29gjx3n.jpg


should I replace them with others?

[northwind]

What i was going to say Mike! 4mm is the absolute minimum. Saying that my last set where at 3.6mm!! That was 45k through london and running Carbonne lorrine pads. The Double H's seemed to accelerate wear big time.

I think the original SRADs had thinner discs, that went down to 3.5mm as minimum. Though from memory, the reason they were replaced with heavier, thicker ones was that they warped all the time ;)

[Ceri JC]

As Mike1234 says, measuring them is best (vernier calipers are good for this). The minimum acceptable thickness will probably vary slightly from disc to disc, but it's often printed on the disc. EG the OE ones on my K4 say something like, '4.5mm minimum' (don't quote me on that actual figure!).