|
The brake fluid change intervals are based upon time, more than mileage. Brake fluid is hygroscopic, which means that it absorbs moisture from the air. It will do this whether you ride it or not. If you keep it in a dry, de-humidified garage, it will absorb moisture more slowly than if it is exposed to weather, or a lot of humidity. There are two reasons you don't want moisture in your brake fluid. The first is that it lowers the boiling point of the fluid. In extreme cases, if you had a fluid with a really depressed boiling point and you got the brakes really hot (say, in spirited riding down a twisty road, or on a mountain decent) you could actually boil the fluid, which results in total brake failure (for that circuit, at least.) This would be a bad thing. The other reason is that the presence of water in the calipers and master cylinders will tend to corrode their bores over time, which will lead to failure of the seals. Adding an ABS system to the mix just adds more complexity and potential problems.
I don't feel that a BMW ABS brake system can be adequately serviced by a do-it-yourselfer. It's your bike, so you decide what you want to do with it.
JR
|