You will find that tractor and harvester tires are available in bias and radial forms. A good radial tire for tractors will provide versatility and efficiency, along with ideal fuel economy, an effective tread design for superior traction, comfort for operators and so on. Such a tire would be suitable for soil tillage as well as road applications. On the other hand, you could also opt for a bias tire with properties such as suitability for off and on-road use, a self-cleaning design, good lug stability, operator comfort, superb traction and optimal durability. Naturally, your choice of tire will depend on the nature of the machinery and the environment within which it will be used.