By Heather Burlingame, Senior Production Editor | September 28, 2010

CaterpillarExtreme Duty Pneumatic and Extreme Duty Solid Flexport tires expand the company's line of skid-steer-loader tires. Ideal for work in concrete plants, asphalt recycling and scrap yards, Extreme Duty Pneumatic tires come in two sizes, 10–16.5 and 12–16.5. Extreme Duty Solid Flexport tires also come in two sizes, the 31×6×10 and the 33×6×11. These tires run on dirt and other unimproved surfaces.