If your rear tire goes flat, you may notice that: Question If your rear tire goes flat, you may notice that: Answers The back of your motorcycle is jerking or swaying from side to side. Steering is easier. Power diminishes considerably. Braking will not work. Explanation If your rear tire fails, the back of your motorcycle may jerk or sway from side to side. If you experience this, you should safely exit the roadway as soon as possible to inspect your tires.