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Help clarifying caliper bolt torque values
I've found two different torque values for front & rear brake caliper mounting bolts (2004 BCR): 40 Nm (PDF service manual) and 30 Nm (bikes owner's manual). Any idea which is correct?
Front bolts are M8 and rear is M10. Thanks
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'04 R1100S BCR, '07 F800S (sold), '04 R1100S (totaled), '15 Thruxton (sold),'90 NT650 (sold), '86 SRX6 (sold - worse decision I ever made) |
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11-30-2017, 04:22 AM
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Join Date: Jun 2002
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BMW Motorrad Repair and Service Data says: 21 NM for the front. 40 NM for the rear. 2cnts from tjs
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11-30-2017, 08:17 AM
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Use 40 Nm and it will strip, it's just a matter of time...ask me how I know!
Just keep in mind you're threading a steel bolt into soft aluminum... I'd suggest helecoil all the caliper mounts just as a precaution.
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11-30-2017, 10:56 AM
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Update. Nitro is right. I looked in an old 04 Maintenance Instruction manual. It says 30 Nm for all 3 calipers. I remember using 22 ft lbs. which is close. Never had a problem using that figure. tjs
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11-30-2017, 11:28 AM
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Thanks all - I'll go with 30 Nm
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'04 R1100S BCR, '07 F800S (sold), '04 R1100S (totaled), '15 Thruxton (sold),'90 NT650 (sold), '86 SRX6 (sold - worse decision I ever made) |
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11-30-2017, 12:32 PM
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The Pig
