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I have a serious question for you, what's the big advantage to SAS, as opposed to whats offered for the original suspension? What is it you can do with your truck now that you could not do before?
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From a pro SAS person, here are some of the pros we've experienced;
* 24 inches of ground clearance to the frame.
* MUCH beefier axles and drive lines.
* OEM replacable parts, only thing really custom now is the drag link and drive lines. Everything else can be ordered from Napa when it wears out/brakes. Which equals to cheap/easy repairs.
* More flex.
* Larger tires.
* Better braking. (4 wheel disc and HUGE rotors, 4 piston calipers)
* Wider stance. (6 inches, without offset rims)
* Full floater rear. (strong)
* No body lift, no more body squeaks. (better looking)
* Deeper water crossings.
* No need for skid plates.
* More load capacity, more gear.
Here are some of the cons we've experienced;
* Worse fuel milage (~17-19 mpg)
* Heavier truck (~4700lbs)
* Wrangler/Toyota ride vs Sidekick ride.
IFS on dirt roads, traditional washboards did seem a tiny bit smoother. However withour current setup, I can hit the larger bumps with less shock to the truck. (So it's a toss)
Cornering, since we're 2 feet off of the ground I don't whip around corners like I used to. If I wanted a sports car ride, I'd buy one. However, the way we have it setup now with front and rear sway bars, it is very stable around corners (suprisingly so) but still less then the traditional IFS ability.
Overall, with our SAS, we drive through deeper water, drive over larger logs, drive over larger rocks, drive through deeper ruts, climb steeper hills, cross larger ditches, plow over deeper snow drifts, all while keeping 4 wheels on the ground.
People always ask us if we made it 'too tall' and is it tippy and I always say no, because it isn't. Our HUGE rear bumper is 4' off of the ground so it 'feels' tall. The entire truck is MUCH taller then a stock or even Calmini lifted Sidekick. But it's also much wider.
I'd say that all of the driving we do now, with a much more capable rig, puts us at more risk than before, primarily because now 'we can'. Just need to make sure that we keep that in mind when we're wheeling.
~Nate