I was driving behind the Hummers and noticed they have the good old leaf springs on the back.
It seams that this "old technology" is still the way to go in 2006.
Any ideas on why this is the case?
Also, if you look under the Buick SUV, the rear lower "A" arms are unfinsihed aluminium. This seams weird, plus then whole assembly rides 6" off the surface of the road.
I thought you bought a SUV for clearance?
If you consider leaf springs to be "old technology", then so is just about everything inside the engine--pistons on connecting rods hooked to a crankshaft--that dates back nearly as far as leaf springs!
Seriously, for a true SUV such as a Hummer, leaf springs out back are virtually bullet-proof on their own, plus they don't require any complicated linkages to hold the rear axle in alignment. If you think of it, in any expected severe usage, the more links and pivots there are in a suspension setup, the more chances for things to bend, break, or just wear out.