Author Topic: Warped brake disc  (Read 3548 times)

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Offline Beer Belly

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Warped brake disc
on: October 27, 2015, 06:23:40 PM
I've noticed some vibration from the front brakes when braking from higher speeds. I suspect one the front discs has warped slightly. The bike is just over 2 years old, low mileage circa 6000, never thrashed or abused. Head bearings properly adjusted, no wheel balance issues, never used in the winter sludge. Has anyone out there had any joy with a warranty claim for this problem? I've never encountered it on any my previous bikes.

#1

Offline krisz75

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  • Bike: VFR 1200 X DCT
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Re: Warped brake disc
Reply #1 on: October 27, 2015, 06:31:04 PM
https://www.crosstourer.com/index.php/topic,1137.0.html

I had the same issue. No Warranty. Buy new discs!
2012 CT 1200X DCT
 KTM 500 EXC

#2

Offline Beer Belly

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Re: Warped brake disc
Reply #2 on: October 27, 2015, 06:35:09 PM
Do you get a 3 year warranty in Hungary as we do in the UK?

#3

Offline krisz75

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Re: Warped brake disc
Reply #3 on: October 27, 2015, 06:50:08 PM
Yes.
2012 CT 1200X DCT
 KTM 500 EXC

#4

Offline Beer Belly

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Re: Warped brake disc
Reply #4 on: October 27, 2015, 06:54:18 PM
I guess its worth a try at the dealers but it's annoying with such little usage.

#5

Offline SunAndSea

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Re: Warped brake disc
Reply #5 on: October 27, 2015, 06:55:13 PM
Highly unlikely the discs will be warped. Probable cause is:

a) Some pad material left on discs from holding brakes on when discs are hot. This will be hard to see but can be sanded off or removed by doing 2 or 3 very hard stops from speed

b) These are floating/semi floating discs. The mounts or 'bobbins' that the discs float on can easily get fouled by brake dust stopping the discs floating. These ca be cleaned with brake cleaner.

I very much doubt your discs are warped at all. It's a common problem on all bikes with floating discs (see point b above)

#6

Offline Beer Belly

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Re: Warped brake disc
Reply #6 on: October 27, 2015, 07:02:19 PM
*Originally Posted by SunAndSea [+]
Highly unlikely the discs will be warped. Probable cause is:

a) Some pad material left on discs from holding brakes on when discs are hot. This will be hard to see but can be sanded off or removed by doing 2 or 3 very hard stops from speed

b) These are floating/semi floating discs. The mounts or 'bobbins' that the discs float on can easily get fouled by brake dust stopping the discs floating. These ca be cleaned with brake cleaner.

I very much doubt your discs are warped at all. It's a common problem on all bikes with floating discs (see point b above)

Good idea, I'll double check the bobbins, very much doubt they will be seized but you never know, I'll also check the runout with my dial test guage when I get chance.

#7

Offline SunAndSea

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Re: Warped brake disc
Reply #7 on: October 27, 2015, 07:06:10 PM
You need to clean the bobbins with brake cleaner very thoroughly. I had this issue on my old ZZR1400 after only 9000kms. Dealer wanted to change the discs. I cleaned the bobbins and all was good. Same on my old CT.

 



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