I have the same problem. I think the answer is get a new set of mufflers. $1000.00 This really sucks!
The R1200c uses a double pipe (theoretically to prevent bluing) but the inner pipe vibrates apart at it's tack-weld point. The easiest fix is with a shim: Remove the pipe by unbolting the heat-sync from the cylinder head. Detach the head-pipe from the muffler by loosening the muffler bolts and twisting it out. Now that it's out, hammer a shim or two into the pipe between the inner and outer pipes to take up any space that would allow the inner pipe to rattle against the outer pipe. I found that window-glass shims (found at your local hardware store to hold your house window glass in place) are perfect for this application. I would suggest doing both pipes while you're at it. Be sure to get a new metal gasket for the the header from your local BMW dealer. Total cost under $20 and about an hour of your time. That will do it.
On many engines the engineers use redirected exhaust gases to quickly warm-up the engine. The valve that redirects the exhaust gas is controlled by a bi-metal spring and the valve assembly can wear out over the years and begin to rattle. It's usually on one of the exhaust manifolds. If you can find it, see if you can rattle it and if it makes a similar sound to what you're hearng.
You need to check all the exhaust pipe hangers, one of them is letting the exhaust rattle against something. Also check muffler heat shield it could also be loose. When transmission in engaged in any gear the engine is torqued to the right, so that is moving the exhaust ( it is attached to the engine so it moves with the engine )into a position to rattle, in neutral the engine is sitting evenly in its mounts so no rattle. May want to check engine and trans mounts too.
Under the right side chrome air cleaner cover.
We need more info. regarding question? Right hand side? Front or back? More info. please...
The reason why the vehicles silencer is on right side is because most of the people are right-handed. A vehicles silencer is a device that reduces the amount of noise that is emitted by the exhaust.
there are no factory seat heaters on the R1200C. On the dresser R1200CL and CLC, there is, and that is controlled by a rocker switch on the handlebar. The passenger seat heater should have a rocker either on the side of the seat or under the right edge of the seat. off, low, and high. If it is a R1200C, Corbin made a heated seat for this and there is a simple on off switch.
Bad strut? Bad strut bearing? Loose exhaust component? Loose heat shield on catalytic converter?
if it is more of a slapping rattle like metal to metal for every revolution of the motor check your crank pulley... my Zuk was making a similar noise... ended up being the 4 bolts holding the pulley on and sheared them right out of my crank sprocket... it sounds rediculous but trust me its worth checkin out
Wow, that is a head scratcher. Almost has to be something interfering with the tire, wheel, brake rotor, or the axle. There is a large plastic skid pan under the engine that, if it were damaged in just the right way, would make the sound that you are describing. I think its time to either jack the front end up so that you can spin the wheel and look and listen for something that coud rub on the rotating pieces or take it to a garage and have them do it. My guess is that its going to be something relatively benign, but you just never know. Please let us know how it turns out. I'd have to have more information. Does the sound seem to be coming from the engine compartment, the road, or under the dash? Does the pitch of the noise change as speed changes? if you move the steering wheel left and right, does the noise change? If you touch the brake pedal does the noise change? If you go faster than 35, say 70, does the noise disappear? By "buzz-rattle", does it sound like a loose exhaust shield, if you've ever heard one of those? Noise the same in full throttle or when you're coasting?
I would have someone check your timing chain a certified mechanic if you can get one
Try changing the top strut bearings they rust up and can give a knocking sound when you go from lock to lock,
A rattle in the right front fender of a Toyota Camry may indicate that you need a wheel alignment. It could also point to a problem with your struts.