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When Do I Change Brake Discs?


brat
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When is it necessary to change brake discs? Is it only when the existing disc is damaged, or should it be done regularly?

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ive been riding a really long time & wondered the same thing

 

that is a good question

 

JB where are you ?
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ever changed the disc's on your car?

when they have been damaged / broken / substances sprayed on them which cannot be removed, etc.

but you'll prob end up doing it when you get that no trust feeling in any case.

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Measure them when you have them new and check for wear over time. I should imagine it is quite relative to what brake pads you are running?

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this has not been answered yet with good answers

Tech guy ?

JB ?

 

can you guys give a better explanation perhaps ?
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I have not replaced discs unless they have been damaged by a stick getting caught in them or warped by overheating.

 

Most dics have a minimum thickness, so a simple measurement with a vernier caliper should give a close enough reading, then most manufacterers will either print the min thickness on the disc or they'll have it in the spec sheets online.

 

I have had the same discs on my bikes for at least two years now with no noticable wear. Short answer is not often...
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this is what i thought

 

I weigh next to nothing, not my fault. My metabolism just seems to work in overdrive so i stop just as fast any other however if you put your finger abt a 1-2mm away from the disc you hardly feel any heat come off mine but on an average weight rider of about 70 - 85kg's 1-2mm away from the disc & the heat is burning your finger
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