When is it appropriate to straighten up before making a quick stop in a curve?

The appropriate time to straighten up before making a quick stop in a curve is when road and traffic conditions permit. This is important because leaning while braking can significantly affect your balance and control of the motorcycle. In certain situations, such as when traction is adequate and there are no obstacles or hazards in the road, it is safer to straighten the motorcycle before applying the brakes. This ensures that the weight is distributed more evenly, enhancing the grip of the tires on the road.

However, in less favorable conditions, such as wet or slippery surfaces, or when there are obstacles to navigate, it would be safer to maintain your lean and brake in that position rather than attempting to straighten up. Thus, assessing the surroundings and conditions is crucial for making the right decision to ensure safety.