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Old 09-29-2012, 10:17 PM   #1
Kokopelli OP
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2003 R1150GS brake disc question

The front brake discs are pretty worn after 170000km and I am looking at a secondhand set from a 2000 R1150GS. My bike has the Evo brakes but no ABS. Who knows if these things will fit. The ventilation hole pattern is different. But I am not so sure about the thickness of the disc. While these are secondhand, they don't seem to have much wear at all.



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Old 10-01-2012, 07:42 PM   #2
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The disks are interchangeable. They are a slightly narrower pad on the later bikes (Tokico/BMW calipers) but the disks are swappable. I have been going back and forth for years on my two sets of wheels (dirt wheels from a Brembo braked bike and my factory set).
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Old 10-01-2012, 09:33 PM   #3
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Thanks, that excellent news. The current ones are down to 4.2mm in the centre and they pulse a bit. Some people say the screws should be replaced. I am surprised, since the hub is an alloy and I would expect it to strip the thread of the hole before anything else.
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Old 10-02-2012, 09:44 AM   #4
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I think the replacement recommendation comes from the heat cycles that they operate under which could make them brittle. Remember to loctite them (I use blue because I HATE red loctite).
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Old 10-02-2012, 10:59 AM   #5
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Ah yes, that makes sense. New bolts it is. While I am sure the bike would stop very rapidly with snapped bolts, it's probably not the way I would want it to.
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Old 10-03-2012, 03:39 AM   #6
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Quote:
Originally Posted by Mr. Canoehead View Post
The disks are interchangeable. They are a slightly narrower pad on the later bikes (Tokico/BMW calipers) but the disks are swappable. I have been going back and forth for years on my two sets of wheels (dirt wheels from a Brembo braked bike and my factory set).

Be careful. The larger discs are interchangable, but you can't use the skinny discs on the bmw badged caliper.

With this caliper (bmw badged tokico caliper) you can use any of the two discs available for the 1150.




With this caliper (bmw badged caliper) you can only use the larger disc, not the skiny disc, as the pads are deeper than the disc.

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Old 10-03-2012, 07:17 AM   #7
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Hmmmmmm....this Steptoe fellow know his stuff.
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Old 10-03-2012, 09:25 AM   #8
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Quote:
Originally Posted by Steptoe View Post
Be careful. The larger discs are interchangable, but you can't use the skinny discs on the bmw badged caliper.

With this caliper (bmw badged tokico caliper) you can use any of the two discs available for the 1150.




With this caliper (bmw badged caliper) you can only use the larger disc, not the skiny disc, as the pads are deeper than the disc.


Yes, I have the Type 2124 and I assumed that all 1150 BMW badged calipers were Tokico calipers - my bad. What year/model got the Type 2125?
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Old 10-03-2012, 01:04 PM   #9
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Be careful. The larger discs are interchangable, but you can't use the skinny discs on the bmw badged caliper.
Thanks for that, now the obvious question, since I have the Brembo version. What type are the discs shown on the picture? Because that's the actual disc I am looking at buying. Is it possible to tell from a photo?
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Old 10-03-2012, 01:28 PM   #10
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Thanks for that, now the obvious question, since I have the Brembo version. What type are the discs shown on the picture? Because that's the actual disc I am looking at buying. Is it possible to tell from a photo?
They look like the deep discs, which are ok for the early brembo caliper.

Just make sure they are 305mm in diameter before you buy them. RT and other models are 320mm
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Old 10-03-2012, 02:25 PM   #11
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They look like the deep discs, which are ok for the early brembo caliper.

Just make sure they are 305mm in diameter before you buy them. RT and other models are 320mm
These came off a 2000 R1150GS, so they should be ok. I've already been out bid on them. I am not sure how much is a fair price. I am thinking half of new should be ok. Thanks again for your input.
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