Mountain bike tyres are specially designed for off-road cycling. They feature a wider profile and deeper treads compared to regular bike tyres, providing better grip and stability on uneven terrain. The tread patterns can vary, with some designed for loose surfaces like mud and others for hard-packed trails. These tyres are typically made from durable rubber to withstand rough conditions and punctures. They come in different sizes and widths, allowing riders to choose the best fit for their specific mountain bike and riding style. Proper tyre pressure is also important for optimal performance and comfort.