BMW K bikes (Bricks)

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1Back to top Go down    Brake disk questions. on Sun Jun 03, 2018 7:58 pm

MarcS

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2Back to top Go down    Re: Brake disk questions. on Sun Jun 03, 2018 8:39 pm

RicK G

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ABS and non ABS are the same however that picture does not show a disc that will fit a 16v RS unless a carrier is also supplied. They will not fit a pre 88 K. I may be wrong and it is a generic picture but do some homework before you buy. I also noticed that it says RS and RT 88, 89 & 90. the disc for 89 and 90 were different for RS and RT/LT.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

3Back to top Go down    Re: Brake disk questions. on Sun Jun 03, 2018 8:58 pm

MarcS

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Hmmm. I have a 1990 non ABS 8v. I have messaged them to see what their story is. I will post my findings.

    

4Back to top Go down    Re: Brake disk questions. on Sun Jun 03, 2018 9:03 pm

duck

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That seller hasn't a clue. I wouldn't even waste my time messaging them.


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

5Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 2:58 am

BobT

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@MarcS wrote:Hmmm. I have a 1990 non ABS 8v. I have messaged them to see what their story is. I will post my findings.
That will be an LT then we assume. The LT 8v never had floating discs and those in the picture look like 16v floaters to me. Not a chance that they will fit yours.
Just bite the bullet and buy a set of EBC, or something, and you will know what you are getting.

    

6Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 3:39 am

charlie99

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looks awfully like my disks that I obtained recently





which use the old standard carrier

If they do fit up properly

would be a great alternative to the rip off prices that Metal gear  etc charge for replacement disks out here,  now well over $225 EACH


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

7Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 3:41 am

duck

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I second the EBC recommendation.  I put some on my K100.


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

8Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 1:28 pm

brickrider2

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Do Spiegler (?) do replacement rotors for K-bike brakes? I know they provide them for BMW airhead bikes, but I've never seen them on a K-bike. Spiegler has a solid reputation.

    

9Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 7:58 pm

MarcS

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I just had a look at the Spiegler site and can find no reference to K100. Everything else it seems but not K100 . Thanks for the idea though.

    

10Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 8:07 pm

JR_K100RS

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Enlarging Charlie's 1st picture you can see the brand name "BRAKING" , I'm currently using these on my KRS , they are a really good quality from Italy  , as you can see they are sort of a floating disc set up , they are in reality very solid , they don't rattle like the discs on a Duke do , the ones you are questioning look very very similar to the BRAKING discs and are also Italian origin

EDIT , found this on the BRAKING website http://www.braking.com/catalogue/dettaglio_prodotto.php?codice_articolo=BW02FI

John Re

Melbourne Australia


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Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

11Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 11:10 pm

MarcS

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Thanks mate. I just contacted them too. Europe is about 10 hours behind me (give or take a little) so hopefully I will hear back soon.

    

12Back to top Go down    Re: Brake disk questions. on Mon Jun 04, 2018 11:42 pm

JR_K100RS

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The BRAKING discs are available from my local workshop here in Melbourne if you come up dry on the other units , not sure on prices but at the very least the shipping up north has got to be cheaper , they are BM Motorcycles in Ringwood , no affiliation but a good bunch of blokes that have looked after me for 15+ years

edit , forgot to mention , x2 on Duck's comment re: EBC discs , got one on the rear of mine

John Re

Melbourne Australia


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Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

13Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 1:10 am

MarcS

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@JR_K100RS wrote:The BRAKING discs are available from my local workshop here in Melbourne if you come up dry on the other units , not sure on prices but at the very least the shipping up north has got to be cheaper , they are BM Motorcycles in Ringwood , no affiliation but a good bunch of blokes that have looked after me for 15+ years

edit , forgot to mention , x2 on Duck's comment re: EBC discs , got one on the rear of mine

John Re

Melbourne Australia
BM motorcycles just quoted me $295 per disk. Brembo is all they have. Probably not a bad price but I will keep looking for now. Thanks for the tip

    

14Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 1:23 am

RicK G

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Those original ones you posted about will fit a K100LT but not the RS of 1990 and $179 is a fairly good price and ATM with discount you can get them for $170.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

15Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 1:24 am

duck

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Get in touch with EBC OZ or check on ebay.

Non-ABS front rotor part #s for K75 or 2V K100:

Left - MD 604 LS
Right - MD 604 RS

Here's what they look like mounted.  They have spiral vent holes so they look a bit more modern than  the BMW OEM rotors.


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

16Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 1:35 am

brickrider2

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My experience may be an outlier, but I've found the EBC rotors on my airhead BMW have warped.  I was under the impression that the floating or semi-floating rotors are not prone to that, but it's happened on my bike.  It's all the more puzzling as I'm an old and slow rider, not the sort that would ever overheat the rotors.

    

17Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 2:02 am

duck

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OEM ones can warp too. I've thrown away a few sets that were warped. (I didn't actually measure runouts on them but they did pulse under braking so I assumed they were warped. And yes, I tried cleaning them with brake cleaner and steel wool to make sure it wasn't something on the surface.)


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

18Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 2:58 am

MarcS

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@RicK G wrote:Those original ones you posted about will fit a K100LT but not the RS of 1990 and $179 is a fairly good price and ATM with discount you can get them for $170.
Mine is an RT. The disks are 285mm but I dont know if they are the same as an RS or LT.

    

19Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 3:47 am

charlie99

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@MarcS wrote:
@RicK G wrote:Those original ones you posted about will fit a K100LT but not the RS of 1990 and $179 is a fairly good price and ATM with discount you can get them for $170.
Mine is an RT. The disks are 285mm but I dont know if they are the same as an RS or LT.

what rick is saying is that the rs changed after 88 ...the rt got dropped completely ... for previous versions of k 8 valve engines and k75 6 valve engines all had the 285 mm  type disks and centre hub including the rt versions ...the k100  lt continued till later years before coming a k1100 lt (cant remember the year that that happened as they sold them for ages

does that help ?


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

20Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 4:06 am

MarcS

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@charlie99 wrote:
@MarcS wrote:
@RicK G wrote:Those original ones you posted about will fit a K100LT but not the RS of 1990 and $179 is a fairly good price and ATM with discount you can get them for $170.
Mine is an RT. The disks are 285mm but I dont know if they are the same as an RS or LT.

what rick is saying is that the rs changed after 88 ...the rt got dropped completely ... for previous versions of k 8 valve engines and k75 6 valve engines all had the 285 mm  type disks and centre hub including the rt versions ...the k100  lt continued till later years before coming a k1100 lt (cant remember the year that that happened as they sold them for ages

does that help ?

So if I am understanding you correctly, there was no RT in 1990? Anyhow , mine has 4 bolts through the wheel and 10 rivets that hold the disk to the carrier. They look identical to yours.

Not that it matters really but my compliance plate says K100rt 5/1990.

    

21Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 4:18 am

charlie99

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not improbable at all ...there were quite a few earlier made at the factory models that sold or got delivered to showroom floors for sale,,, many years later … 
just wonder what engine number you may have that might give a clue to the actual build date ?

but you got the point …


good luck


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

22Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 10:42 pm

MarcS

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The engine number is 104EA 3089 2042. That might help but I have no idea what the numbers mean so any idea would be great

    

23Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 11:19 pm

RicK G

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104EA This designates a K100 engine
3089 Build date 30th week 1989
2042 I think this is the number of the engine for the year but there may be more meaning in it.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

24Back to top Go down    Re: Brake disk questions. on Tue Jun 05, 2018 11:28 pm

MarcS

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@RicK G wrote:104EA This designates a K100 engine
3089 Build date 30th week 1989
2042 I think this is the number of the engine for the year but there may be more meaning in it.
 Wow. That's awesome. Thank you very much Rick. Can you speak Italian?

I got my reply from the Italian company on Ebay. These are the measurements of the disk. 


Ø Esterno: 285

Ø Interno: 165

Spessore: 5

Ø Interasse: 178



I have figured out the first three but Interasse has me beat. The first measurements make sense and will fit my bike.  I am just unsure about the last one. I have typed it into Google and come up with lots of translations but none made any sense.




OK, re edit to this post;      I found the part number in the ebay ad and searched it. That lead me to here https://www.wemoto.com/parts/picture/ms-dis1013
They are K100 disks cheers WOOOO HOOOOOO cheers



Last edited by MarcS on Tue Jun 05, 2018 11:52 pm; edited 1 time in total (Reason for editing : I have new info)

    

25Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 12:36 am

RicK G

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Interasse  Wheelbase 178cm WTF that has to do with a disc I don't know

I didn't realize they were floating discs and was thinking bolted or riveted and it didn't make sense
The price is good. I had to buy a set of K1200 discs and they were $297 each plus the bolts and wave washers etc


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

26Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 1:06 am

MarcS

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WTF is exactly what I meant when I said I couldn't make sense of it lol. I also cant find any measurement on my disks that is close to 178mm. Not even the distance between the disks. I am now waiting for a reply from wemoto to see if it works out cheaper to order from there. I am really counting pennies ATM.

    

27Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 3:27 am

Gaz

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Would the "wheelbase" be the measurement of the mounting hole centres diametrically opposed?


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Gaz
95 K1100LT 0232224; 90 K75 6427509; 87 R80G/S PD 6292136
    

28Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 3:51 am

RicK G

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Looking at the pics Charlie put up that would be about right Gaz


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

29Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 9:20 am

Laitch

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@RicK G wrote:Looking at the pics Charlie put up that would be about right Gaz
The wheelbase translation probably is the result of auto-translation to the most common but not necessarily the most accurate usage. Asse means axis and inter translates similarly to the English meaning of between or among. So as Gaz has observed, it could be the center-to-center measurement of opposite mounting holes.
 cheers


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1995 K75T 68,000 miles
    

30Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 7:17 pm

charlie99

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good find , and listed for 138 .00  aussie sheckles ...cool   (at the wemoto.com.au site )


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

31Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 8:02 pm

Gaz

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Charlie, interesting that at the Wemoto.com.au site those disks were hard to find. Only came up using the DIS1013 number but not in any search of the site could I get to them by brand or bike model number.

But now we know they are there .........

Cheers


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Gaz
95 K1100LT 0232224; 90 K75 6427509; 87 R80G/S PD 6292136
    

32Back to top Go down    Re: Brake disk questions. on Wed Jun 06, 2018 8:03 pm

K75cster

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+1 for Gaz and Laitch, across the rivet centres


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

33Back to top Go down    Re: Brake disk questions. on Sun Jun 10, 2018 4:09 am

MarcS

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@Gaz wrote:Charlie, interesting that at the Wemoto.com.au site those disks were hard to find. Only came up using the DIS1013 number but not in any search of the site could I get to them by brand or bike model number.

But now we know they are there .........

Cheers
Can you please post me a link to the .au page with these disks on. I searched using the part no. and part name ect. but cant find them. Are they cheaper than the Ebay ones I posted the link to?

    

34Back to top Go down    Re: Brake disk questions. on Sun Jun 10, 2018 6:18 am

rawdonball

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+1 for Gaz and Laitch...

Also known as Pitch Circle Diameter (I think). Any time I see a disk with ID and OD dimensions, plus a third which falls beyween these two - then I'm thinking PCD (if there are a set of mounting holes spaced on a circle)...


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'88 K100RT, '86 K75C, '05 Yamaha TTR250
    

35Back to top Go down    Re: Brake disk questions. on Sun Jun 10, 2018 8:48 am

Gaz

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Here you go - give this a try. I found it by scrolling down to the bottom of their home page then putting in the part number that the guys had found on eBay (DIS1013).

Disks for K100 from Wemoto

Cheers


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Gaz
95 K1100LT 0232224; 90 K75 6427509; 87 R80G/S PD 6292136
    

36Back to top Go down    Re: Brake disk questions. on Sun Jun 10, 2018 7:59 pm

MarcS

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Awesome. Thanks mate. I just ordered cheers cheers . Shiny new disks for the brick Very Happy

    

37Back to top Go down    Re: Brake disk questions. on Sun Jun 10, 2018 10:04 pm

Dai

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Be interesting to see what their discs are like because Kyoto brake pads are complete and utter shite. For all the use they are, you might as well put your feet down.


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

38Back to top Go down    Re: Brake disk questions. on Sun Jun 10, 2018 10:18 pm

MarcS

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@Dai wrote:Be interesting to see what their discs are like because Kyoto brake pads are complete and utter shite. For all the use they are, you might as well put your feet down.
I might try that too lol!

    

39Back to top Go down    Re: Brake disk questions. on Mon Jun 11, 2018 6:38 pm

Snod Blatter

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@Dai wrote:Be interesting to see what their discs are like because Kyoto brake pads are complete and utter shite. For all the use they are, you might as well put your feet down.
I have tried Kyoto brake pads and I very much agree. Serious wet weather lag with 4 pot Brembos, amazing!

I have also tried their clutch plates and they were quite good, so who knows..


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1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

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