Full-size SUVs like the Ford Expedition give owners maximum usefulness, thanks to their roomy interiors, loads of cargo space and truck-like towing capacities. The towing capacity of your 1998 Expedition varies, depending on the engine size, rear axle ratio and wheel size.
The 1998 Ford Expedition with the 4.6-liter V-8 engine can tow up to 6,100 pounds with 16-inch wheels and 5,500 pounds with 17-inch wheels. When fitted with the 5.4-liter engine and 16-inch wheels, the Expedition's towing capacity jumps to 6,400 pounds with the 3.31-to-1 rear axle ratio or 7,900 pounds with the 3.73-to-1 rear axle ratio. With the 5.4-liter engine, 3.73-to-1 rear axle ratio and 17-inch wheels, the Expedition can handle up to 7,400 pounds.