The 2006 Hummer H3 is the little guy of the brand but with a curb weight over two tons, it’s no small truck. Powered by a 220-horsepower, 3.5-liter, five-cylinder engine, the Hummer H3 is by no means fast. Fuel economy was a priority with the H3 so it will appeal to those that want the ruggedness of a Hummer but don’t want to pay the high price of feeding the bigger, high-powered H1 Alpha or H2. Assisting with the Hummer H3’s off-road ability are standard 32-inch all-terrain tires with the option of mounting 33-inch rubber all around.