2007 Hummer H3 Rubicon Expedition Car Review and Specs | 2007 Hummer H3 Rubicon Expedition Car Wallpaper Pictures Pics

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HUMMER continues its uncompromised off-road legacy with the addition of the H3 to the lineup. The H3's off-road prowess has been validated on some of the world's most extreme terrain.

"We engineered the H3 with the ultimate off-road experience in mind, challenging it on the toughest trails," said Todd Hubbard, H3 Ride and Handling Engineer. "The H3 earned its HUMMER badging on trails that defined the capability of its legendary H1 and H2 siblings."

Over a period of three years, development and engineering teams tested the H3 in places such as Moab, Utah, Tellico, N.C., Silver Lake Sand Dunes in Michigan, Barstow, Calif., Box Canyon, Ariz. and the legendary Rubicon Trail in California.

Based on testing at Moab and on the Rubicon Trail, engineers added three additional high-strength stamped-steel skid plates to protect the oil pan, front axle, transfer case, and fuel tank. The trails of Moab are scattered with large molten rock formations creating opportunities to test the H3's rock climbing and crawling abilities. The Rubicon Trail was such an intensive training route that its mere 12.5 miles of trail take two days to traverse.

Testing in Tellico, N.C., verified the H3's ability to ford 16-inches of water at 20 mph, through 24-inch streams at a five-mph pace and traverse mud crossings. Tellico also provided an opportunity to reinforce the vehicle's rock crawling capability.

Michigan's Silver Lake Sand Dunes offered one of many severe testing surfaces for the vehicle's tires. The Goodyear all-terrain 32-inch tires, standard on the H3, are the largest standard tires in its class and provide optimum traction and an opportunity for increased approach, departure and breakover angles. Optional 33-inch Bridgestone Dueler A/T tires were developed especially for the H3, and enable the truck to go almost anywhere with ease. The Bridgestone tire features a robust three-body ply construction for that resists punctures from even the toughest off-road terrain, as well as an over-the-sidewall tread design with integrated noise treatment technology for reduced driving noise. They are as big as those originally used on the full-size H2.

In Barstow, Calif., engineers meticulously fine-tuned the H3's suspension to perform well in high-speed desert runs. The long front control arms, which contribute to its wider stance, front and rear micro-cellular urethane jounce bumpers, large 46mm mono-tube gas-charged shocks, and front and rear stabilizer bars, were all tested to ensure they'd hold up under whatever abuse was dealt them.

Finally, H3 testing in outside GM's Desert Proving Ground near Phoenix, Ariz. in Box Canyon through the Woodpecker Mine, and Martinez Canyon trails proved the H3's rocker protection, underbody skid shields, tires, suspension and steering tuning could withstand another round of intense and aggressive off-roading.

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2007 Hummer H3 Rubicon Expedition Review

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