Superlift's domination of the Super Duty suspension lift market continues with new offerings for the 2008 model, coil spring equipped F-250 and F-350 4WD pickups. The new truck rides great, and good driveability can be retained if the truck is lifted correctly. "Driveability" is the sum of a vehicle's driving traits and mannerisms, such as steering "feel", ride quality, etc. It's a sad truth... in order to have the least expensive product available, some manufacturers do not include components that are truly needed for optimum driveability and service life. Your Super Duty represents quite an investment... why start compromising now? The new Ford is very sensitive to caster angle change. As the truck is lifted, the frame-mounted radius arms cause the front axle to rotate, resulting in less caster angle. Incorrect caster angle makes the truck more difficult to steer, since the truck's normal tendency to self-center is reduced. Incorrect caster can also induce steering shimmy. One more point that emphasizes the importance of correct caster angle and steering geometry in general… as a truck is loaded, by adding cargo or trailer tongue weight, caster is lost as the vehicle's rear ride height drops. When hauling or towing, driveability is even more important. We use two different methods to correct caster, depending on lift height: our more popular 4" and 6" systems utilize standard type radius arm drop brackets that lower the rear (frame mounted) ends of the radius arms. The 2" to 2.5" systems use a bracket that bolts to the front of the radius arm. Our 8" lift utilizes both methods in order to gain enough caster correction. Using the standard type radius arm drop at the frame end alone would overly stress the frame rails in addition resulting in an unpleasant appearance.