Rear brake rotor touching rear fork boot

[enjine]

In my de-winterization of the bike, I've been fixing up all the little issues a bike of 92k miles might accumulate. The bike is a '99 R1100R. I even tossed a fresh pair of Ohlins on the bike. It's always handled kind of strange for me, but the Ohlins really make a difference.

That was, before I noticed something that pulled my riding confidence away: the rear wheel brake disc is actually touching the large boot at the end of the rear fork (part #33171452504)!

I don't know how long it has been like this--maybe since I bought it?
Amazingly though, the rubber boot isn't torn or sliced at all. I compared to my buddy's R1150R and fortunately for him, he's got plenty clearance between the boot and the rear disc. Different bike though, I know, with a different type of brake rotors.

Has anyone ever seen something like this? Do I keep riding? Any idea of how it could have happened? I did have the rear tire off when changing the rear shock, but as the wheel bolts into that assembly, I don't think that could have caused it. I.E. the assembly would have been touching regardless of if the wheel was on or not.

thanks in advance for any insight

the rubber boot I'm refering to is item #10 in this image:
http://www.maxbmwmotorcycles.com/fiche/DiagramsMid/B0000726.png

[PGlaves]

An actual picture would help. But here are a couple of thoughts.

1. The position of the boot on the back of the swingarm is fairly well fixed by the groove it settles into, but its position on the nose of the final drive is somewhat variable. If it is positioned too far forward on the final drive it may be splayed outward somewhat further toward the middle.

2. Right boot? I thought they were all the same, but ....

[enjine]

thanks paul.
i'll try to snap a pic, but honestly i can't even see it unless it's on the lift or if i "look" with my fingers. i'll do that tomorrow and see what i can capture.

if it's not the right boot, that would have been swapped before i owned the bike a few years ago.
it's really strange thinking that it's been like that for as long as i've had it, and to be honest when i roll the bike, i've always heard the slight friction, but i'd thought it was the brake caliper on the (floating) rotor up front.

[DrPaul]

It seems that if all things are nice and tight (wheel on hub, disc on wheel/hub, hub in FD, and FD on swingarm pivots) that you may not have a problem. Could be the rubber boot is a bit bloated or misaligned with the FD. On your model, is the brake disc mounted to the hub or the wheel?

[enjine]

On your model, is the brake disc mounted to the hub or the wheel?

It's mounted to the hub. And yes things are very tight and solid throughout that area. There's no free play or movement of any kind.