Dreams of riding a motorcycle at high speeds, especially when they're recurring, can reflect a variety of emotions and themes. Here are some possible interpretations:

1. Desire for Freedom: Motorcycles often symbolize freedom and independence. Your dream may indicate a longing for more freedom in your life or a desire to break free from constraints. The high speeds suggest a wish to escape or move forward quickly.
2. Facing Fears: Since you mention being afraid of riding a motorcycle in real life, this dream could be a way for your subconscious to confront that fear. Riding at high speeds might represent a challenge you are facing or an urge to overcome anxiety and take control of a situation.
3. Thrill and Adventure: The yellow color of the bike might signify energy, optimism, and adventure. This could suggest a desire for excitement or a need to embrace new experiences despite your fears.
4. Control and Risk: Motorcycles require a different level of control compared to cars. Your dream may reflect feelings about control in your life—perhaps you're navigating situations where you feel you are taking risks or need to be more assertive.

Consider how these themes resonate with your current life circumstances. Reflecting on your feelings during the dream and any changes in your waking life might provide further insights. If you find these dreams unsettling, it may help to explore your fears and think about ways to gradually address them.