The Suburban offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The QX60’s suspension doesn’t offer adjustable shock absorbers.
The Suburban Z71/High Country has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The Suburban’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The QX60 doesn’t offer a load leveling suspension.
For a smoother ride and more stable handling, the Suburban’s wheelbase is 19.9 inches longer than on the QX60 (134.1 inches vs. 114.2 inches).
For better handling and stability, the track (width between the wheels) on the Suburban is 1.6 inches wider in the front and 1.4 inches wider in the rear than on the QX60.
The Suburban’s front to rear weight distribution is more even (52% to 48%) than the QX60’s (55.1% to 44.9%). This gives the Suburban more stable handling and braking.
For greater off-road capability the Suburban has a 1.3 inches greater minimum ground clearance than the QX60 (8 vs. 6.7 inches), allowing the Suburban to travel over rougher terrain without being stopped or damaged. The Suburban Z71 Air Ride’s minimum ground clearance is 3.3 inches higher than on the QX60 (10 vs. 6.7 inches).