When we first start to ride, many of us learn that about 75% of a motorcycle?s stopping power from the front brake and 25% from the rear if the road is dry, and 50% from each brake if the road is wet. We learned to apply both brakes each time we needed to stop or slow down.
While applying both brakes is a good general rule, the problem with this simple ?rule of thumb? is that, while it gets you thinking about having two brakes, it doesn?t take your speed into account.
The best braking technique varies depending on your speed. For example, at speeds less than 15 MPH, virtually 100% of your stopping power can and should be derived from the rear brake, since at slow speeds there is a big risk of locking your front brakes and dropping your bike..
At speeds above 15 – 20 MPH the 75% to 25% ratio starts to make more sense, with an important change. Any fixed apportionment of braking effort, front to rear will not yield the best braking results. Instead, the rider needs to understand how his motorcycle acts during braking and adjust the application of each brake to maximize stopping power throughout the process.
Ideally, as you begin to brake you apply both brakes at the same time with almost equal force, but never so much that you lock either brake. The bike?s weight will transfer to the front suspension, decreasing rear wheel traction and increasing the risk of locking the rear brake. As this happens you should increase pressure on the front brake and let off the rear brake.
As your speed falls the bike’s weight will start to shift back again, and you will start to feel the front suspension begin to rise. As the weight transfers back you should increase pressure on the rear brake and reduce front brake pressure. If you are downshifting as you brake (which you should be) the engine compression itself will work as an extra brake on the rear wheel. Once your speed drops below 15 MPH, the stop can be completed with the rear brake. This will result in a smooth stop with no “bounce,” and a limited possiblity that you will drop your bike by locking the front wheel at an inopportune moment.
As with any riding technique, it’s a good idea to find some empty pavement and practice until it comes naturally. Remember, well trained reflexes are your most important safety device.
Think about it, and ride safe. – Don Oldaker – Safety Officer