That's why every factory truck with off-road ambitions tends to offer a spare tire, usually full-size. My Tahoe has one. So does every full- and mid-size American truck. A Jeep Wrangler mounts it ...

During World War II that ultimate off-road machine, the Willys MB – predecessor of today's Jeep — used a rear-mounted spare tire. Modern Jeeps continue the tradition because it's more than a ...