Heavy Duty Flotation / Tractor: The Alliance 358 is a new tractor drive wheel tread pattern 358 characterized by extra strong lugs for heavy-duty services on medium HP agriculture tractors and implements. The 358 tread pattern includes special reinforced durable lugs in the lug roots area in order to prevent fatigue cracks. In addition, triple angled lugs shape enables smooth ride in the field and on the road. A strong nylon diagonal carcass guards against mechanical failures and moisture deterioration.