TRUCK TIRE EXPENSE PER WEEK (CF)(Truck Tire Expense CF+Shop Compensation Truck Tires CF+Outside Vendor Repair Truck Tires CF)(Weeks In Month CF)\frac{(Truck\ Tire\ Expense\ CF+Shop\ Compensation\ Truck\ Tires\ CF+Outside\ Vendor\ Repair\ Truck\ Tires\ CF)}{(Weeks\ In\ Month\ CF)}(Weeks In Month CF)(Truck Tire Expense CF+Shop Compensation Truck Tires CF+Outside Vendor Repair Truck Tires CF)