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K100-forum.com » Technical, repair and troubleshooting » Frame, fairing and wheels » New brake rotors needed. What would you buy?

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Bonzo

Bonzo
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For a 16v ABS.

Rear first as it's past its sell by date. The front have 'a bit left', so I'll look to them later in the year.

BMW NOS are too pricey, so (unless you know different) my options are s/h 

https://www.ebay.co.uk/itm/BMW-K100RS-16V-1990-25-711-miles-rear-brake-disc-2994/184289529728

or new EBC  

https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=5&NU=15&M=40&Ct=IA&SbCt=BA_15_40_IA_55


I thought there was a Brembo option but cant see it with ABS.


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1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

92KK 84WW Olaf

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I bought EBC, Motorworks and Motobins sell alternatives to BM...


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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 48,061 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 61,190 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

stanthomas

stanthomas
Silver member
Silver member
EBC every time. Better than original. Second-hand are usually worn-out and overpriced although, to be fair, that one looks pretty decent.
I suppose it really comes down to how long you're going to keep the bike; a cheap fix for an MOT or something to ride for a few years.

I've just bought one of these for my 16V:
https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=6&Q=BRA00661

5.0mm thick new, marked with min. thickness 4.5mm.
Use FA18 organic pads rather than sintered to get a decent life out of the disc.


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K100RS 16V '91
    

Bonzo

Bonzo
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Life time member
Thanks chaps

EBC it is then  New brake rotors needed. What would you buy? 112350


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1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

Ringfad

Ringfad
Life time member
Life time member
https://www.ebay.co.uk/itm/Disc-Front-Fits-BMW-R850R-98-02-R1-1100-93-99-K1100LT-89-99-Each/114127016379

and 

https://www.ebay.co.uk/itm/Disc-Rear-BMW-K75-86-95-K100-82-90-K1-88-93-K1100LT-89-93-Each/113635977576

I have successfully replaced the rear disc on two x K1100's using the above - you do need to remove the rivets for the rear one. I have not tried the front ones but they are well priced.


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New brake rotors needed. What would you buy? Ir-log10

   ;BMW; K100RS Style Black 1987 105K Km     ;BMW; K1 Black 1993 60K Km     ;BMW;  K1100RS Black 1996       ;BMW; K1 Blue 1990 25K Miles
    

gorio

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I have successfully replaced the rear disc on two x K1100's using the above - you do need to remove the rivets for the rear one. I have not tried the front ones but they are well priced.
what did you use to put them back together? Also notice the minimum thickness is much less for the after market one. Do you remember what the thickness was new?


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1992 K100rs 16v
1997 R1100rt
2006 R1200rt
Past lives
Kawasaki Concours
1976 BMW R90s
1975 Ducati 860gt
1992 Honda VFR750
1985 Honda VF750
1982 Kawasaki 750GPZ
1975 Norton 850 Commando
    

Ringfad

Ringfad
Life time member
Life time member
gorio wrote:
I have successfully replaced the rear disc on two x K1100's using the above - you do need to remove the rivets for the rear one. I have not tried the front ones but they are well priced.
what did you use to put them back together? Also notice the minimum thickness is much less for the after market one. Do you remember what the thickness was new?
I used flat head allen bolts to fit them, the discs are 5mm thickness and  they are working out fine for me. You need to remove the abs ring and then grind out the rivets. I find it hard to justify the price of a new one when the bike only cost 350 euro.

New brake rotors needed. What would you buy? Img_2019


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New brake rotors needed. What would you buy? Ir-log10

   ;BMW; K100RS Style Black 1987 105K Km     ;BMW; K1 Black 1993 60K Km     ;BMW;  K1100RS Black 1996       ;BMW; K1 Blue 1990 25K Miles
    

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Ringfad wrote:https://www.ebay.co.uk/itm/Disc-Front-Fits-BMW-R850R-98-02-R1-1100-93-99-K1100LT-89-99-Each/114127016379

and 

https://www.ebay.co.uk/itm/Disc-Rear-BMW-K75-86-95-K100-82-90-K1-88-93-K1100LT-89-93-Each/113635977576

I have successfully replaced the rear disc on two x K1100's using the above - you do need to remove the rivets for the rear one. I have not tried the front ones but they are well priced.
This one no postie parts to North America!


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Patience is something you admire in the driver behind you and scorn in the one ahead.
~Mac McCleary
1977 R75/7-100, '93 K11/K12 Big Block, '95 R100 Mystic, '96 K1100RS, '98 K1200RS, '06 K1200R & '09 K1300GT. Projects: 1993 & '96 K1100RS, & 1st '98 K1200RS.
The Mystic, Big Block, 2nd K1200RS, K12R & K13 are running & ridable.
    

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K100-forum.com » Technical, repair and troubleshooting » Frame, fairing and wheels » New brake rotors needed. What would you buy?

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