Mr.jrmull....rear wheel offset spec is in the manual.I don't have it with me but the spec isn't set to a single measurement.BMW spec will be Minimum to Maximum and if I remember the difference between min/max is rather large?
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Rear wheel spacer is somewhere in my shop.Never going back on and I should have removed it 250,000km ago.
I can't speak for other bikes but there could be a clearance issue without the spacer.Them 3 little Torx bolts holding the ABS ring in place may touch the wheel?But not in my case....2mm clearance.
A long time ago at about 50,000 KM, I also removed the rear wheel spacer to reduce the offset. Like yours, from this point on my "pull-to-the-right" was reduced to almost nil. Since this, I have ridden 100,000 KM with many changes of tire brands and the correction is still stable.
HOWEVER, as you have posted, ANYONE who intends to do this must be aware of certain RISKS if you have the 5.00 inch rim:
1) on K1200RS once the spacer is removed the wheel can only be installed in one specific position (out of 4 possible rotation position). Otherwise one of the small bolts of the rear brake rotors (holding ABS speed sensor) will hit the wheel casting and cause a "potential" crooked install.
The above "wheel install" issue was discussed a few times on the now defunct I-BMW forum. The 3 attached pictures will help visualize / check proper install without a spacer.
2) In some countries, in case of an critical accident related to handling/control, you could be liable of riding a modified motorcycle. Someone could argue the factory installed this spacer on all K1200RS for a good reason (and it was missing on yours).
3) I cannot suggest that you try this on your K1200RS - what has worked for me might NOT work for you and MAY cause dangerous handling - you have been warned ;-)
WHAT ARE these SPECS: As you have posted above, the specs allowed are much larger for Offset to the left (front wheel can be 14 mm LEFT of rear wheel centerline). On the opposite, the offset to the right allowed is only 5 mm (front wheel is right of Rear centerline). See end of section 46 in BMW shop manual for the K1200RS - I have not checked my CLYMER for equivalent info, but I know it is published in BMW shop manual.
I have NOT measured my original offset before removing the rear wheel spacer, but the fact the pull-to-the-right was reduced to almost nil was good enough for me. However the front tire cupping / wear on left has not fully disapeared - as discussed in earlier posts, there are other factors at work (heavy steering biased of K1200RS, front tire pressure , Telelever design, crown of the roads...)