Most dirt bike tires do require a tube, especially traditional rubber tires. The tube provides necessary air pressure support, prevents friction between the tire and rim, and enhances durability and traction on rough terrain. However, some modern dirt bike tires are designed to be tubeless and can be mounted directly onto compatible rims without a tube. When choosing tires, it’s important to follow the manufacturer’s recommendations or tire specifications to determine if a tube is needed.

To determine the correct size tube for a dirt bike tire, check the tire sidewall for its dimensions (e.g., 80/100-21). Match the tube size to these dimensions, ensuring it corresponds to the tire’s width and diameter. Additionally, verify the tube’s compatibility with your specific rim size and tire type. Always refer to the manufacturer’s specifications for precise fitment.

If you experience a flat tire, first assess the condition of both the tire and tube. Replace the tube if it’s punctured or damaged, but also inspect the tire for any cuts, cracks, or significant wear. If the tire shows signs of severe damage or excessive wear, replace it as well. For optimal performance and safety, ensure both components are in good condition.

No, you cannot run tube tires without tubes. Tube tires are specifically designed to work with an inner tube to hold air and maintain pressure. Running them without a tube will lead to loss of air pressure and poor performance. For a tube-less setup, you would need tires and rims designed for tubeless use.

Dirt bikes typically use tube tires because they offer better puncture resistance and durability in rough terrains. Tubeless tires require precise sealing and compatible rims, which can be challenging to maintain in off-road conditions. Tubed tires are more easily repairable and provide greater flexibility for dealing with the rugged and variable environments encountered in dirt biking.

You can put bigger tires on a dirt bike, but it requires careful consideration. Ensure the larger tires fit within the bike’s frame and fork clearance, and that they are compatible with the existing rims. Larger tires can affect handling, performance, and gearing. Always consult the manufacturer’s recommendations or a professional before making such modifications.