Experiencing a sudden jamming of the back tire while riding can be a dangerous situation, and it's important to investigate the cause to prevent any future incidents. There could be several reasons why your back tire jammed while riding:
Tire blowout: A sudden loss of tire pressure or a blowout can cause the tire to jam. This can occur due to punctures, worn-out tires, or improper tire maintenance. Inspect the tire for any signs of damage, such as punctures, cuts, or sidewall bulges.
Wheel lock-up: If the rear wheel locked up while riding, it could be due to a malfunctioning braking system or excessive braking force applied to the rear wheel. Check the condition of the brake system, including the brake pads, brake lines, and calipers, to ensure they are functioning properly.
Suspension or swingarm issues: A fault in the suspension or swingarm can cause the rear tire to seize up. This could be due to a broken or worn-out suspension component, loose or damaged swingarm bearings, or misalignment of the rear wheel. Have a mechanic inspect the suspension and swingarm for any issues.
Chain or sprocket problems: A malfunctioning chain or sprocket can cause the rear tire to lock up. Check the chain tension, lubrication, and overall condition. Also, inspect the sprockets for wear, damage, or misalignment.
Mechanical failure: There could be other mechanical failures within the drivetrain or rear wheel assembly that caused the tire to jam. This could include issues with the wheel bearings, axle, or other components. A thorough inspection by a qualified mechanic is essential to identify any such problems.
Given the seriousness of the situation you experienced, it's strongly recommended that you have your motorcycle thoroughly inspected by a professional technician. They can examine the specific components involved and determine the exact cause of the tire jamming. This will help ensure your safety and prevent similar incidents from occurring in the future.